CHOLESTECH CORPORATION
S-1, 1996-05-09
LABORATORY ANALYTICAL INSTRUMENTS
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<PAGE>
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 9, 1996
                                                        REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                             CHOLESTECH CORPORATION
             (Exact name of Registrant as specified in its charter)
 
<TABLE>
<S>                             <C>                         <C>
          CALIFORNIA                       3826                     94-3065493
 (State or other jurisdiction       (Primary Standard            (I.R.S. Employer
              of                        Industrial            Identification Number)
incorporation or organization)     Classification Code
                                         Number)
</TABLE>
 
                             CHOLESTECH CORPORATION
                           3347 INVESTMENT BOULEVARD
                           HAYWARD, CALIFORNIA 94545
                                 (510) 732-7200
   (Address and telephone number of Registrant's principal executive offices)
                            ------------------------
 
                             WARREN E. PINCKERT II
                     PRESIDENT AND CHIEF EXECUTIVE OFFICER
                             CHOLESTECH CORPORATION
                           3347 INVESTMENT BOULEVARD
                           HAYWARD, CALIFORNIA 94545
                                 (510) 732-7200
      (Name, address and telephone number of agent for service of process)
                            ------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                            <C>
            ROBERT P. LATTA, ESQ.                      CHARLES W. MULANEY, JR., ESQ.
      WILSON SONSINI GOODRICH & ROSATI                     SKADDEN, ARPS, SLATE,
          PROFESSIONAL CORPORATION                            MEAGHER & FLOM
             650 PAGE MILL ROAD                            333 WEST WACKER DRIVE
             PALO ALTO, CA 94304                             CHICAGO, IL 60606
               (415) 493-9300                                 (312) 407-0700
</TABLE>
 
                            ------------------------
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
As soon as practicable after the effective date of this Registration Statement.
                            ------------------------
 
    If  any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to  Rule 415 under the Securities Act  of
1933, check the following box./ /
 
    If  this form  is filed  to register  additional securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration statement  number  of  the  earlier
effective registration statement for the same offering./ /
 
    If  this form  is a post-effective  amendment filed pursuant  to Rule 462(c)
under the Securities Act,  check the following box  and list the Securities  Act
registration  statement number  of the earlier  effective registration statement
for the same offering./ /
 
    If delivery of the prospectus is expected  to be made pursuant to Rule  434,
please check the following box./ /
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                          PROPOSED
                                                         PROPOSED          MAXIMUM
                                        AMOUNT TO         MAXIMUM         AGGREGATE        AMOUNT OF
      TITLE OF EACH CLASS OF               BE         OFFERING PRICE      OFFERING       REGISTRATION
    SECURITIES TO BE REGISTERED      REGISTERED (1)    PER SHARE (2)      PRICE (2)           FEE
<S>                                  <C>              <C>              <C>              <C>
Common Stock, no par value.........     3,450,000          $6.25         $21,562,500       $7,435.34
</TABLE>
 
(1)  Includes  450,000 shares which the Underwriters have the option to purchase
     solely to cover over-allotments, if any.
 
(2)  Estimated  solely  for  the  purpose   of  computing  the  amount  of   the
     registration  fee pursuant to Rule 457(c) of the Securities Act of 1933, as
     amended, based  upon  the average  of  the high  and  low sales  prices  as
     reported on the Nasdaq National Market on May 3, 1996.
                         ------------------------------
 
    THE  REGISTRANT HEREBY  AMENDS THIS REGISTRATION  STATEMENT ON  SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A  FURTHER  AMENDMENT  WHICH SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT  SHALL THEREAFTER BECOME EFFECTIVE IN  ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT  OF 1933  OR UNTIL  THE REGISTRATION  STATEMENT SHALL  BECOME
EFFECTIVE  ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                             CHOLESTECH CORPORATION
                             CROSS REFERENCE SHEET
 
<TABLE>
<CAPTION>
                   ITEM NUMBER AND HEADING
             IN FORM S-1 REGISTRATION STATEMENT                         LOCATION OR CAPTION IN PROSPECTUS
- -------------------------------------------------------------  ----------------------------------------------------
<C>        <S>                                                 <C>
    1.     Forepart of the Registration Statement and Outside
            Front Cover Page of Prospectus...................  Outside Front Cover Page of Prospectus
 
    2.     Inside Front and Outside Back Cover Pages of
            Prospectus.......................................  Inside Front Cover Page of Prospectus; Outside Back
                                                                Cover Page of Prospectus
 
    3.     Summary Information, Risk Factors and Ratio of
            Earnings to Fixed Charges........................  Prospectus Summary; The Company; Risk Factors
 
    4.     Use of Proceeds...................................  Prospectus Summary; Use of Proceeds
 
    5.     Determination of Offering Price...................  Underwriting
 
    6.     Dilution..........................................  Dilution
 
    7.     Selling Security Holders..........................  Not Applicable
 
    8.     Plan of Distribution..............................  Outside and Inside Front Cover Pages of Prospectus;
                                                                Underwriting
 
    9.     Description of Securities to be Registered........  Prospectus Summary; Dividend Policy; Capi-
                                                                talization; Description of Capital Stock
 
   10.     Interests of Named Experts and Counsel............  Legal Matters; Experts
 
   11.     Information with Respect to the Registrant........  Outside and Inside Front Cover Pages of Prospectus;
                                                                Available Information; Prospectus Summary; Risk
                                                                Factors; The Company; Use of Proceeds; Dividend
                                                                Policy; Price Range of Common Stock;
                                                                Capitalization; Selected Financial Data;
                                                                Management's Discussion and Analysis of Financial
                                                                Condition and Results of Operations; Business; Man-
                                                                agement; Certain Transactions; Principal
                                                                Shareholders; Description of Capital Stock;
                                                                Underwriting; Experts; Financial Statements
 
   12.     Disclosure of Commission Position on In-
            demnification for Securities Act
            Liabilities......................................  Not Applicable
</TABLE>
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN  ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                   PRELIMINARY PROSPECTUS, DATED MAY 9, 1996
PROSPECTUS
 
                                3,000,000 SHARES
 
                                     [LOGO]
 
                                  COMMON STOCK
 
    All of the 3,000,000 shares of Common Stock offered hereby are being sold by
Cholestech Corporation  ("Cholestech" or  the "Company").  The Company's  Common
Stock is quoted on the Nasdaq National Market under the symbol "CTEC." On May 8,
1996, the last reported sale price for the Common Stock was $6.25 per share. See
"Price Range of Common Stock."
 
    THE  COMMON STOCK OFFERED HEREBY  INVOLVES A HIGH DEGREE  OF RISK. SEE "RISK
FACTORS," BEGINNING ON PAGE 5.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
    EXCHANGE COMMISSION OR  ANY STATE SECURITIES  COMMISSION NOR HAS  THE
       SECURITIES  AND  EXCHANGE COMMISSION  OR ANY  STATE SECURITIES
           COMMISSION PASSED  UPON THE  ACCURACY OR  ADEQUACY  OF
               THIS  PROSPECTUS. ANY REPRESENTATION    TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                                             UNDERWRITING
                                                             DISCOUNTS AND     PROCEEDS TO
                                           PRICE TO PUBLIC  COMMISSIONS(1)     COMPANY(2)
<S>                                        <C>              <C>              <C>
  Per Share..............................         $                $                $
  Total(3)...............................         $                $                $
</TABLE>
 
(1) The  Company  has  agreed  to indemnify  the  Underwriters  against  certain
    liabilities,  including  liabilities under  the Securities  Act of  1933, as
    amended. See "Underwriting."
 
(2) Before deducting expenses of the Offering payable by the Company,  estimated
    at $500,000.
 
(3)  The Company has granted the Underwriters  a 30-day option to purchase up to
    450,000 additional shares of Common Stock  on the same terms and  conditions
    set  forth above, solely to cover over-allotments, if any. If such option is
    exercised in full,  the total  Price to Public,  Underwriting Discounts  and
    Commissions  and Proceeds to Company will be  $      ,  $      and  $      ,
    respectively. See "Underwriting."
 
                            ------------------------
 
    The shares of Common Stock offered by the Underwriters are subject to  prior
sale,  receipt  and  acceptance  by  them  and  subject  to  the  right  of  the
Underwriters to  reject  any  order  in  whole or  in  part  and  certain  other
conditions.  It is  expected that delivery  of such  shares will be  made at the
offices of the agent of Vector Securities International, Inc., in New York,  New
York, on or about             , 1996.
 
                             ---------------------
 
Vector Securities International, Inc.       Principal Financial Securities, Inc.
 
          , 1996
<PAGE>
[LOGO]
 
                             [PICTURE OF PRODUCTS]
 
                             ---------------------
 
               SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
 
    CERTAIN  STATEMENTS UNDER THE CAPTIONS "PROSPECTUS SUMMARY," "RISK FACTORS,"
"USE OF PROCEEDS," "MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL  CONDITION
AND  RESULTS  OF OPERATIONS"  AND "BUSINESS"  AND  ELSEWHERE IN  THIS PROSPECTUS
CONSTITUTE "FORWARD-LOOKING  STATEMENTS"  WITHIN  THE  MEANING  OF  THE  PRIVATE
SECURITIES   LITIGATION   REFORM  ACT   OF   1995  (THE   "REFORM   ACT").  SUCH
FORWARD-LOOKING STATEMENTS INVOLVE  KNOWN AND UNKNOWN  RISKS, UNCERTAINTIES  AND
OTHER FACTORS WHICH MAY CAUSE THE ACTUAL RESULTS, PERFORMANCE OR ACHIEVEMENTS OF
THE  COMPANY, OR  INDUSTRY RESULTS, TO  BE MATERIALLY DIFFERENT  FROM ANY FUTURE
RESULTS,  PERFORMANCE   OR   ACHIEVEMENTS   EXPRESSED   OR   IMPLIED   BY   SUCH
FORWARD-LOOKING  STATEMENTS.  SUCH  FACTORS  INCLUDE,  AMONG  OTHER  THINGS, THE
FOLLOWING: THE COMPANY'S HISTORY OF LOSSES AND UNCERTAINTY OF PROFITABILITY; THE
UNCERTAINTY OF MARKET ACCEPTANCE OF  THE L-D-X SYSTEM; THE COMPANY'S  DEPENDENCE
ON  DEVELOPMENT AND INTRODUCTION  OF NEW PRODUCTS;  THE COMPANY'S LIMITED SALES,
MARKETING AND DISTRIBUTION EXPERIENCE AND DEPENDENCE ON DISTRIBUTORS; THE  RISKS
ASSOCIATED   WITH  CASSETTE  MANUFACTURING;  THE  COMPANY'S  HIGHLY  COMPETITIVE
INDUSTRY AND  RAPID  TECHNOLOGICAL CHANGE  WITHIN  THE COMPANY'S  INDUSTRY;  THE
UNCERTAINTY  OF  PATENT AND  PROPRIETARY TECHNOLOGY  PROTECTION AND  RELIANCE ON
TECHNOLOGY LICENSED FROM THIRD PARTIES; CHANGES  IN, OR FAILURE TO COMPLY  WITH,
GOVERNMENT   REGULATION;  THE  UNCERTAINTY  OF  THIRD  PARTY  REIMBURSEMENT  FOR
PROCEDURES PERFORMED USING THE COMPANY'S PRODUCTS; THE POTENTIAL FLUCTUATIONS IN
THE COMPANY'S  QUARTERLY  RESULTS; THE  COMPANY'S  DEPENDENCE ON  RETENTION  AND
ATTRACTION OF KEY EMPLOYEES; GENERAL ECONOMIC AND BUSINESS CONDITIONS; AND OTHER
FACTORS REFERENCED IN THIS PROSPECTUS. SEE "RISK FACTORS."
 
    IN  CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK OF
THE COMPANY AT  A LEVEL ABOVE  THAT WHICH  MIGHT OTHERWISE PREVAIL  IN THE  OPEN
MARKET. SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
    IN  CONNECTION WITH  THIS OFFERING,  CERTAIN UNDERWRITERS  AND SELLING GROUP
MEMBERS (IF ANY)  OR THEIR RESPECTIVE  AFFILIATES MAY ENGAGE  IN PASSIVE  MARKET
MAKING  TRANSACTIONS  IN  THE COMMON  STOCK  ON  THE NASDAQ  NATIONAL  MARKET IN
ACCORDANCE WITH  RULE 10B-6A  UNDER THE  SECURITIES EXCHANGE  ACT OF  1934.  SEE
"UNDERWRITING."
<PAGE>
                               PROSPECTUS SUMMARY
 
    THE  FOLLOWING SUMMARY  IS QUALIFIED  IN ITS  ENTIRETY BY  THE MORE DETAILED
INFORMATION AND THE FINANCIAL STATEMENTS  AND NOTES THERETO APPEARING  ELSEWHERE
IN  THIS  PROSPECTUS,  INCLUDING  INFORMATION UNDER  "RISK  FACTORS."  EXCEPT AS
OTHERWISE  NOTED,  ALL  INFORMATION  IN  THIS  PROSPECTUS,  INCLUDING  FINANCIAL
INFORMATION,  SHARE AND PER SHARE DATA, ASSUMES NO EXERCISE OF THE UNDERWRITERS'
OVER-ALLOTMENT OPTION. SEE "UNDERWRITING." SPECIAL NOTE: CERTAIN STATEMENTS  SET
FORTH  BELOW CONSTITUTE "FORWARD-LOOKING  STATEMENTS" WITHIN THE  MEANING OF THE
REFORM ACT. SEE "SPECIAL  NOTE REGARDING FORWARD-LOOKING  STATEMENTS" ON PAGE  2
FOR ADDITIONAL FACTORS RELATING TO SUCH STATEMENTS.
 
    Cholestech   Corporation   ("Cholestech"   or   the   "Company")   develops,
manufactures and  markets a  proprietary point  of care  diagnostic system  (the
"L-D-X  System") which measures specific analytes to detect various diseases and
disorders within five minutes  using a single drop  of whole blood. The  Company
currently  markets its L-D-X System and a series of lipid and glucose panels for
preventive screening and  monitoring applications.  In January  1996, the  L-D-X
System  and the Company's  total cholesterol, high  density lipoprotein ("HDL"),
triglycerides and glucose tests  were granted waived  status under the  Clinical
Laboratory  Improvement  Amendments  of  1988 ("CLIA"),  the  first  such waiver
granted under  CLIA's  newly-developed  ease  of  use,  accuracy  and  precision
guidelines. The CLIA waiver allows health care providers to use the L-D-X System
without  the additional  operating costs  and extensive  regulatory requirements
associated with CLIA compliance. The Company  believes that the L-D-X System  is
the  only multi-analyte diagnostic system to be classified as waived under CLIA.
The Company believes that the  L-D-X System's CLIA waived status,  technological
flexibility,  ease of  use, accuracy and  low maintenance costs  provide it with
competitive advantages over other point of care diagnostic systems.
 
    As a  result of  the cost  and administrative  burden associated  with  CLIA
compliance,  the L-D-X  System and  its lipid-focused  test menu  were initially
marketed to health care providers performing high volume preventive risk  factor
screening,  including hospitals,  corporate wellness  programs, community health
centers and health promotion service providers. Immediate results are  important
in  this setting because  it allows high  risk individuals to  be identified and
enrolled in appropriate intervention programs in the same visit. With its recent
CLIA waived  status, the  Company has  expanded its  marketing and  distribution
focus  to also target the monitoring  market, in particular the physician office
laboratory ("POL") and pharmacy  segments. The Company's  access to this  market
was  limited prior  to the  CLIA waiver because  of the  cost and administrative
burden associated with the CLIA regulations.  The Company intends to target  the
54,000  POLs and  68,000 pharmacies in  the United States.  The Company believes
that the  L-D-X System  will  enable health  care  providers in  the  monitoring
market,  particularly  POLs,  to  better  control  their  medical  costs  by (i)
eliminating the need for patient follow-up with test results, (ii) reducing  the
time before therapy can be prescribed or modified, and (iii) allowing physicians
to capture additional revenue from conducting testing in their offices. In order
to  effectively penetrate this  market, the Company has  recently entered into a
non-exclusive distribution  agreement with  Physician Sales  and Services,  Inc.
("PSS"),  a  national  medical products  distributor  with more  than  700 sales
professionals who focus on the POL market.
 
    The L-D-X System consists of a portable analyzer and proprietary  disposable
test cassettes. The test cassette is the focal point of the L-D-X System and the
key  to  its flexibility.  The  Company has  incorporated  most of  the critical
technological features of the system into the test cassette so that as new tests
are developed, the existing L-D-X Analyzer can be utilized with simple  software
upgrades.  The Company has  recently demonstrated the  feasibility of performing
immunoassay-based tests on the L-D-X Analyzer. The Company believes that, if  an
immunoassay  cassette is successfully developed, the  L-D-X Analyzer will be the
only point  of care  diagnostic system  capable of  performing both  enzyme  and
immunoassay-based tests on a single instrument.
 
    The  Company  intends to  leverage the  technological flexibility  of L-D-X-
System to capitalize on attractive markets that  can be served by point of  care
diagnostic  instruments.  The Company  is  developing additional  test cassettes
which will enable it  to provide a  more comprehensive line  of products to  the
monitoring  market.  These cassettes  include tests  for  uric acid,  blood urea
nitrogen and creatinine used  to measure kidney  function. The Company  believes
that these tests, along with cholesterol and glucose, are among the most ordered
tests  by physicians in the POL market. In May 1996, the Company entered into an
agreement with  Metra  Biosystems,  Inc.  ("Metra  Biosystems")  to  develop  an
immunoassay  test  cassette  to measure  bone  resorption,  a key  gauge  of the
effectiveness of osteoporosis treatment. The  Company has also demonstrated  the
feasibility  of measuring prostate specific  antigen ("PSA") for prostate cancer
screening from whole blood using the Company's technology.
 
                                       3
<PAGE>
                                  THE OFFERING
 
<TABLE>
<S>                                                 <C>
Common Stock offered..............................  3,000,000 shares
Common Stock outstanding after the Offering.......  11,131,824 shares (1)
Use of proceeds...................................  For research and development, capital
                                                    expenditures, repayment of indebtedness, expansion
                                                    of sales and marketing capabilities, and other
                                                    working capital and general corporate purposes
Nasdaq National Market symbol.....................  CTEC
</TABLE>
 
                             SUMMARY FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                  YEAR ENDED MARCH 31,
                                                                  -----------------------------------------------------
                                                                    1992       1993       1994       1995       1996
                                                                  ---------  ---------  ---------  ---------  ---------
<S>                                                               <C>        <C>        <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
  Revenues......................................................  $   1,518  $   3,744  $   3,029  $   4,038  $   6,873
  Cost of products sold.........................................        565      4,908      4,972      3,933      4,505
                                                                  ---------  ---------  ---------  ---------  ---------
  Gross profit (loss)...........................................        953     (1,164)    (1,943)       105      2,368
                                                                  ---------  ---------  ---------  ---------  ---------
  Operating expenses:
    Research and development....................................      6,124      1,843      2,134        715        714
    Sales and marketing.........................................      1,446      2,171      2,909      2,694      3,168
    General and administrative..................................      2,373      3,133      2,288      1,983      1,376
                                                                  ---------  ---------  ---------  ---------  ---------
      Total operating expenses..................................      9,943      7,147      7,331      5,392      5,258
                                                                  ---------  ---------  ---------  ---------  ---------
  Loss from operations..........................................     (8,990)    (8,311)    (9,274)    (5,287)    (2,890)
  Interest income, net..........................................        100        246        364        243        144
                                                                  ---------  ---------  ---------  ---------  ---------
  Net loss......................................................  $  (8,890) $  (8,065) $  (8,910) $  (5,044) $  (2,746)
                                                                  ---------  ---------  ---------  ---------  ---------
                                                                  ---------  ---------  ---------  ---------  ---------
  Net loss per share (2)........................................  $  (13.38) $   (1.57) $   (1.14) $    (.63) $    (.34)
                                                                  ---------  ---------  ---------  ---------  ---------
                                                                  ---------  ---------  ---------  ---------  ---------
  Weighted average common shares (2)............................        664      5,122      7,791      7,954      8,042
                                                                  ---------  ---------  ---------  ---------  ---------
                                                                  ---------  ---------  ---------  ---------  ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                              MARCH 31, 1996
                                                                                        --------------------------
                                                                                         ACTUAL    AS ADJUSTED (3)
                                                                                        ---------  ---------------
<S>                                                                                     <C>        <C>
BALANCE SHEET DATA:
  Cash, cash equivalents and restricted marketable investment securities..............  $   4,111    $    19,501
  Working capital.....................................................................      4,442         20,581
  Total assets........................................................................      9,645         25,035
  Long-term obligations, net of current portion.......................................        810             11
  Accumulated deficit.................................................................    (49,662)       (49,662)
  Shareholders' equity................................................................      5,982         22,920
</TABLE>
 
- ------------------
(1) Based upon shares  outstanding as of March  31, 1996. Excludes: (i)  518,244
    shares  of Common Stock issuable upon  exercise of options outstanding as of
    March 31, 1996, with a weighted  average exercise price of $3.49 per  share;
    (ii)  39,242  shares  of Common  Stock  issuable upon  exercise  of warrants
    outstanding as of March 31, 1996, with an exercise price of $3.50 per share;
    (iii) 183,412 shares of Common Stock reserved for future issuance under  the
    Company's  stock plans; (iv)  39,526 shares of Common  Stock issued to Metra
    Biosystems in May 1996 at a purchase  price of $6.325 per share; and (v)  an
    aggregate  of  up to  $750,000  of Common  Stock  to be  purchased  by Metra
    Biosystems at fair market  value upon achievement  of certain milestones  by
    the   Company.  See  "Management's  Discussion  and  Analysis  of  Financial
    Condition and Results of Operations," "Business -- Strategic Relationships,"
    "Management -- 1988  Stock Incentive Program,"  "-- Employee Stock  Purchase
    Plan,"  "Description  of Capital  Stock"  and Notes  7  and 10  of  Notes to
    Financial Statements.
 
(2) See Note 1  of Notes to  Financial Statements for  an explanation of  shares
    used in computing net loss per share.
 
(3)  Adjusted to reflect the sale of 3,000,000 shares of Common Stock offered by
    the Company hereby, at an assumed  public offering price of $6.25 per  share
    and after deducting estimated underwriting discounts and commissions and the
    estimated  expenses of the Offering, and  the anticipated application of the
    estimated   net   proceeds   therefrom.   See   "Use   of   Proceeds"    and
    "Capitalization."
 
                                       4
<PAGE>
                                  RISK FACTORS
 
    IN  ADDITION  TO THE  OTHER INFORMATION  IN  THIS PROSPECTUS,  THE FOLLOWING
FACTORS SHOULD BE CONSIDERED CAREFULLY  BY POTENTIAL INVESTORS IN EVALUATING  AN
INVESTMENT  IN THE SHARES OF COMMON  STOCK OFFERED HEREBY. SPECIAL NOTE: CERTAIN
STATEMENTS SET FORTH  BELOW CONSTITUTE "FORWARD-LOOKING  STATEMENTS" WITHIN  THE
MEANING   OF  THE  REFORM  ACT.  SEE  "SPECIAL  NOTE  REGARDING  FORWARD-LOOKING
STATEMENTS" ON PAGE 2 FOR ADDITIONAL FACTORS RELATING TO SUCH STATEMENTS.
 
    HISTORY OF LOSSES;  UNCERTAINTY OF  FUTURE PROFITABILITY.   The Company  has
experienced  significant operating losses  since inception and,  as of March 31,
1996, had an accumulated deficit of $49.7 million. The Company has not generated
significant revenues to  date, and there  can be no  assurance that  significant
revenues  will  ever  be achieved.  The  Company  expects to  continue  to incur
operating losses as well  as negative cash flows  from operations as it  expands
its  product research and development efforts for new test panels, expands sales
and marketing activities  to address the  monitoring market, particularly  POLs,
and  the screening market,  and expands manufacturing  capacity for existing and
new test  panels.  The  Company's  ability  to  increase  revenues  and  achieve
profitability and positive cash flows from operations will depend, in part, upon
successful  commercialization of  existing product  offerings in  the monitoring
market, particularly  to POLs,  of which  there  can be  no assurance.  See  "--
Uncertainty  of Market  Acceptance of  L-D-X System."  The Company's  ability to
increase revenues  and  achieve  profitability  and  positive  cash  flows  from
operations  will  also  depend  upon  the  Company's  ability  to  complete  the
development of and successfully introduce additional diagnostic tests  currently
under  development. There  can be  no assurance  that the  Company's development
efforts will result in  commercially available products,  that the Company  will
obtain required regulatory clearances or approvals for any new tests in a timely
manner,  or at all, that  the Company will be  successful in introducing any new
tests, that the  Company will be  able to achieve  and maintain  cost-efficient,
high-volume  manufacturing capacity for any new tests or that any new tests will
achieve  a  significant  level  of   market  acceptance.  The  development   and
commercialization  of the new  tests will require  additional development, sales
and marketing,  manufacturing and  other expenditures.  The required  level  and
timing  of  such  expenditures  will impact  the  Company's  ability  to achieve
profitability and positive cash flows from operations. There can be no assurance
that  the  Company  will  ever   achieve  significant  commercial  revenues   or
profitability  in  the  future.  See "Management's  Discussion  and  Analysis of
Financial Condition and Results of Operations."
 
    UNCERTAINTY OF MARKET ACCEPTANCE OF L-D-X SYSTEM.  The Company has generated
only limited  revenues to  date, primarily  from sales  of the  L-D-X System  to
hospitals,  public  health  departments,  corporate  wellness  programs,  health
promotion  service  providers,  managed  care  organizations,  community  health
centers,  the military  and others  in the  screening market.  In order  for the
Company to increase revenues and  achieve profitability and positive cash  flows
from  operations, the L-D-X  System must achieve a  significant degree of market
acceptance among health  care providers in  the monitoring market,  particularly
POLs.  The substantial majority of diagnostic tests used by physicians and other
health care providers  are performed  by independent  clinical laboratories  and
hospital-based laboratories. Physicians and other health care providers will not
use  the L-D-X System unless they determine that it is an attractive alternative
to other means of screening or monitoring blood detected diseases,  particularly
independent  clinical laboratories and hospital-based laboratories, and that the
clinical benefits to the  patient and cost savings  achieved through use of  the
L-D-X System outweigh the cost of the system. Such determination will depend, in
part,  upon  the  L-D-X  System's  accuracy,  ease  of  use,  rapid  test  time,
reliability,  cost  effectiveness,   portability  and  level   of  third   party
reimbursement.  Even if  the advantages  of the  L-D-X System  in diagnosing and
monitoring patients with blood detected  diseases are established as  clinically
significant,  physicians,  medical clinics,  pharmacists  and other  health care
providers may elect not to purchase and  use the L-D-X System for any number  of
other  reasons. For example, physicians and  other health care providers may not
change their established means of having such tests performed, may not make  the
necessary  investment to purchase the  Company's products or may  not be able to
obtain adequate reimbursement from third party payors for tests performed  using
the  L-D-X System.  As a  result of  these and  other factors,  there can  be no
assurance that  demand for  the  L-D-X System,  particularly in  the  monitoring
market, will be sufficient to allow for profitable operations. In addition, even
if  the Company is successful  in placing analyzers at  the point of care, there
can be no assurance that placement of analyzers will result in sustained  demand
for cassettes. The
 
                                       5
<PAGE>
L-D-X  System and its component analyzer and testing cassettes, all of which are
based upon a single set of  core technologies, are currently the Company's  only
products  and will  continue to account  for substantially all  of the Company's
revenues  for  the  foreseeable  future.  Because  the  L-D-X  System  currently
represents  the Company's sole  product focus, the Company  could be required to
cease operations if  the L-D-X System  does not achieve  a significant level  of
market  acceptance. See "Business -- Market  Overview," "-- Products," "-- Sales
and Marketing" and "-- Third Party Reimbursement."
 
    DEPENDENCE ON DEVELOPMENT AND INTRODUCTION OF NEW PRODUCTS.  The Company  is
in  the early stages of  developing tests designed to  extend the L-D-X System's
capability  to  include  additional  tests  useful  to  health  care  providers,
particularly   POLs.  The   Company  believes   that  its   revenue  growth  and
profitability will depend, in part, upon its ability to complete development  of
and successfully introduce these new tests. In addition, some of these new tests
depend   on   the  development   of   immunoassay-based  technologies   and  the
incorporation of these technologies into the  L-D-X System. The Company will  be
required  to undertake time-consuming and costly development activities and seek
regulatory approval for  these new  tests. There can  be no  assurance that  the
Company  will  not  experience  difficulties that  could  delay  or  prevent the
successful development,  introduction and  marketing of  these new  tests,  that
regulatory  clearance or approval of any new tests will be granted by the FDA on
a timely  basis, if  at all,  or that  the new  tests will  adequately meet  the
requirements of the applicable market or achieve market acceptance. For example,
although  the Company believes that most of the new tests under development will
require a pre-market clearance  under Section 510(k)  ("510(k)") of the  Federal
Food,  Drug and Cosmetic  Act of 1938,  as amended, for  marketing in the United
States. a  requirement  that the  Company  file a  pre-market  approval  ("PMA")
application  for a new  test would significantly delay  the Company's ability to
market such test and significantly  increase the costs of development.  Further,
in  order  to  achieve significant  market  acceptance,  any new  tests  must be
classified as waived under CLIA, of which there can be no assurance. In order to
successfully commercialize  any  new tests,  the  Company will  be  required  to
establish  and  maintain  reliable,  cost-efficient,  high-volume  manufacturing
capacity for such tests. The Company has in the past encountered difficulties in
scaling up  production  of  new test  cassettes,  including  problems  involving
production  yields, quality control and  assurance, variations and impurities in
the raw materials and performance of the manufacturing equipment. If the Company
is  unable  for  technological  or  other  reasons,  to  complete   development,
introduction  and the scale up of manufacturing of  any new tests or if such new
tests do not  achieve a significant  level of market  acceptance, the  Company's
business,  financial  condition and  results of  operations could  be materially
adversely affected.  See  "Business --  Products,"  "-- Manufacturing"  and  "--
Government Regulation."
 
    LIMITED  SALES, MARKETING  AND DISTRIBUTION EXPERIENCE;  DEPENDENCE ON THIRD
PARTY DISTRIBUTORS.  In order for  the Company to increase revenues and  achieve
profitability,  the L-D-X  System must  achieve a  significant degree  of market
acceptance among health  care providers in  the monitoring market,  particularly
POLs.  The  Company has  only limited  experience marketing  and selling  to the
monitoring market in the  United States. The Company  intends to distribute  its
products  to  this  market  primarily  through  a  limited  number  of  national
distributors.  The  Company  has  only  recently  entered  into  a  distribution
arrangement  with such a national distributor,  PSS. The Company may be required
to enter into  additional distribution  arrangements in order  to achieve  broad
distribution of its products. There can be no assurance that the Company will be
able  to maintain the recently established distribution relationship with PSS or
that the  Company will  be able  to enter  into and  maintain arrangements  with
additional  distributors  on a  timely basis,  if  at all.  The Company  will be
dependent upon these distributors to assist it in promoting market acceptance of
the L-D-X  System and  creating demand  for the  Company's products.  The  risks
associated  with  dependence  upon  distributors  will  be  exacerbated  by  the
Company's intention to rely on a limited number of distributors, with the result
that sales to these distributors will  account for a significant portion of  the
Company's  revenues.  There can  be no  assurance  that these  distributors will
devote the resources necessary to provide effective sales and marketing  support
to the Company. In addition, the Company's distributors may give higher priority
to  the products of other medical suppliers, thus reducing their efforts to sell
the Company's products. The Company does  not expect that its distributors  will
be   contractually  committed  to   make  future  purchases   of  the  Company's
 
                                       6
<PAGE>
products and  could therefore  discontinue carrying  the Company's  products  in
favor of a competitor's product at any time or for any reason. If the Company is
unable  to establish appropriate arrangements with distributors or if any of the
Company's distributors become unwilling  or unable to  promote, market and  sell
the  L-D-X System,  the Company's business,  financial condition  and results of
operations would be materially  adversely affected. See  "Business -- Sales  and
Marketing" and "-- Strategic Relationships."
 
    In  addition, in order to increase sales  and market acceptance of the L-D-X
System, the Company will also be required  to expand its direct sales force  and
marketing organization. Establishing a sales and marketing capability sufficient
to  support the level of sales necessary for the Company to attain profitability
will require  substantial  efforts  and  significant  management  and  financial
resources.  The Company is currently actively recruiting a new executive officer
to replace the Company's former Executive Vice President of Marketing and Sales,
who resigned in April 1996. There can  be no assurance that the Company will  be
able to recruit and retain direct sales and marketing personnel, in particular a
new  executive officer  of sales and  marketing, in  order to build  a sales and
marketing organization, that  building such a  sales and marketing  organization
will be cost effective or that the Company's sales and marketing efforts will be
successful. See "Business -- Sales and Marketing."
 
    RISKS  ASSOCIATED  WITH CASSETTE  MANUFACTURING.   The  Company manufactures
internally all of the  test cassettes that are  components of the L-D-X  System.
The  manufacture  of cassettes  is a  highly complex  and precise  process. Such
manufacturing is sensitive to  a wide variety  of factors, including  variations
and  impurities in the raw materials, difficulties in the manufacturing process,
performance of the manufacturing equipment and the level of contaminants in  the
manufacturing  environment. The Company  has in the  past experienced lower than
expected production  yields  that  have adversely  affected  gross  margins  and
delayed  product  shipments. To  the extent  that the  Company does  not achieve
acceptable  manufacturing  yields  of  test  cassettes  or  experiences  product
shipment  delays,  the Company's  business, financial  condition and  results of
operations could  be  materially  adversely  affected.  The  Company's  cassette
manufacturing  lines  represent  a  single point  of  potential  failure  in its
manufacturing process that  would be  costly and  time consuming  to replace  if
their  operation were interrupted. Furthermore, the Company has a limited number
of employees  dedicated  to  the  operation  and  maintenance  of  the  cassette
manufacturing  equipment, the loss of whom could impact the Company's ability to
effectively operate and  service such  equipment. The  interruption of  cassette
manufacturing  operations or  the loss  of employees  dedicated to  the cassette
manufacturing facility could  have a  material adverse effect  on the  Company's
business,   financial  condition   and  results   of  operations.   The  Company
manufactures all  of  the cassettes  at  its Hayward,  California  manufacturing
facility,  and any prolonged inability  to utilize such facility  as a result of
earthquake, fire  or otherwise  would  have a  material  adverse effect  on  the
Company's business.
 
    The  Company  believes  that it  will  be required  to  expand manufacturing
capacity for new  and existing test  cassettes. There can  be no assurance  that
such  expansion of cassette manufacturing capacity  can be completed in a timely
fashion, if ever. Failure to increase cassette manufacturing capacity on a  cost
effective  and  timely  basis  and  in  compliance  with  applicable  regulatory
requirements would have  a material  adverse effect on  the Company's  business,
financial  condition and results of operations. In addition, the Company will be
required to build  a new cassette  manufacturing line for  the immunoassay  test
cassettes  under development.  To date, the  Company has not  developed the core
technologies, processes  and production  equipment for  an immunoassay  cassette
manufacturing  line.  Failure to  successfully  develop an  immunoassay cassette
manufacturing line and achieve acceptable  yields could have a material  adverse
effect on the Company's business, financial condition and results of operations.
See "Business -- Manufacturing."
 
    HIGHLY COMPETITIVE INDUSTRY; RAPID TECHNOLOGICAL CHANGE.  The testing market
in   which  the  Company  competes   is  intensely  competitive.  The  Company's
competition  consists   mainly   of  independent   clinical   laboratories   and
hospital-based  laboratories, as  well as manufacturers  of bench  top and other
point of care analyzers.  The substantial majority of  diagnostic tests used  by
physicians and other health
 
                                       7
<PAGE>
care  providers are currently performed by independent clinical laboratories and
hospital-based laboratories. The  Company expects that  these laboratories  will
compete intensely to maintain their dominance of the testing market. In order to
achieve  market acceptance for the L-D-X System, the Company will be required to
demonstrate that the L-D-X System is  an attractive alternative to the  clinical
laboratory and hospital-based laboratory. This will require physicians to change
their  established  means  of  having  such tests  performed.  There  can  be no
assurance that  the  L-D-X System  will  be able  to  compete with  the  testing
services   provided  by  these  laboratories.  See  "--  Uncertainty  of  Market
Acceptance for  L-D-X  System."  In addition,  companies  having  a  significant
presence  in  the  diagnostic  market,  such  as  Abbott  Laboratories, Clinical
Diagnostic Systems,  a division  of Johnson  and Johnson  which was  formerly  a
division  of Eastman  Kodak Company,  and Boehringer  Mannheim GmbH ("Boehringer
Mannheim"), have developed  or are  developing analyzers targeted  for point  of
care.   These  competitors  have  substantially  greater  financial,  technical,
research and  other resources  and larger,  more established  marketing,  sales,
distribution  and  service organizations  than  the Company.  In  addition, such
competitors offer  broader product  lines than  the Company,  have greater  name
recognition  than the Company,  and offer discounts as  a competitive tactic. In
addition, several smaller companies are currently making or developing  products
that  compete or will  compete with those  of the Company.  The Company believes
that it currently  has a competitive  advantage with the  classification of  its
existing   products  as  waived  under  CLIA.   The  Company  expects  that  the
reclassification of  the  L-D-X System  as  waived  under CLIA  will  result  in
competitors  seeking to develop products that qualify for waived classification.
The Company expects that such competitors will compete intensely to maintain and
increase their  market shares.  There can  be no  assurance that  the  Company's
competitors  will not succeed in obtaining CLIA waived status for their products
or in developing or marketing technologies  or products that are more  effective
and  commercially attractive than  the Company's current  or future products, or
that  would  render  the  Company's   technologies  and  products  obsolete   or
noncompetitive. The Company's products must compete effectively overall with the
existing  and  future products  of  its competitors  primarily  on the  basis of
ability to perform tests at the point of care, ease of use, testing of  multiple
analytes  from  a single  sample,  ability to  conduct  tests without  a skilled
technician or a blood pretreatment step, the breadth of tests available,  market
presence,  cost  effectiveness, precision,  accuracy  and immediacy  of results.
There can be no  assurance that the Company  will have the financial  resources,
technical  expertise  or  marketing,  distribution  or  support  capabilities to
compete successfully in the future. See "Business -- Products -- Products  Under
Development," "-- Technology" and "-- Competition."
 
    UNCERTAINTY  OF  PATENT AND  PROPRIETARY  TECHNOLOGY PROTECTION;  LICENSE OF
TECHNOLOGY OF THIRD PARTIES. The  Company's ability to compete effectively  will
depend in part on its ability to develop and maintain proprietary aspects of its
technology,  and operate  without infringing  the proprietary  rights of others.
Cholestech has eight  United States and  several foreign issued  patents and  is
currently  prosecuting patent applications with  certain foreign patent offices.
There can be no assurance that any of the Company's pending patent  applications
will result in the issuance of any patents, or that, if issued, any such patents
will  offer protection against competitors with similar technology. There can be
no assurance that  any patents  issued to the  Company will  not be  challenged,
invalidated  or circumvented in the future or that the rights created thereunder
will provide a  competitive advantage. In  addition, there can  be no  assurance
that  competitors, many of  which have substantially  greater resources than the
Company and have  made substantial investments  in competing technologies,  will
not  seek to apply  for and obtain  patents covering technologies  that are more
effective  than  the  Company's  technologies  or  would  render  the  Company's
technologies  or products obsolete  or uncompetitive, or  will prevent, limit or
interfere with the Company's ability to make, use or sell its products either in
the United States or in international markets.
 
    The medical products industry has been characterized by extensive litigation
regarding patents  and  other intellectual  property  rights. There  can  be  no
assurance  that the  Company will  not in  the future  become subject  to patent
infringement claims and litigation or interference proceedings conducted in  the
United States Patent and Trademark Office ("USPTO") to determine the priority of
inventions.  The defense and  prosecution of intellectual  property suits, USPTO
interference proceedings, and related  legal and administrative proceedings  are
both   costly   and   time   consuming.   Litigation   may   be   necessary   to
 
                                       8
<PAGE>
enforce any patents issued to the Company, to protect trade secrets or  know-how
owned  by the Company or to determine  the enforceability, scope and validity of
the proprietary rights of others. Any litigation or interference proceeding will
result in substantial expense to the Company and significant diversion of effort
by the Company's technical and management personnel. An adverse determination in
litigation or interference proceedings to which  the Company may become a  party
could subject the Company to significant liabilities to third parties or require
the  Company to seek licenses  from third parties which  may not be available on
commercially reasonable terms.
 
    The Company's  current  products  incorporate  technologies  which  are  the
subject  of patents  issued to,  and patent  applications filed  by, others. The
Company has obtained licenses for certain of these technologies. There can be no
assurance that  the Company  will  be able  to  obtain licenses  for  technology
patented  by others on  commercially reasonable terms,  that it will  be able to
develop alternative  approaches  if  unable  to  obtain  licenses  or  that  the
Company's  current and  future licenses  will be  adequate for  the operation of
Cholestech's business.  The failure  to  obtain such  licenses or  identify  and
implement  alternative approaches  could have a  material adverse  effect on the
Company's business, financial condition and results of operations.
 
    The  Company  also  relies  upon  trade  secrets,  technical  know-how   and
continuing  invention to  develop and maintain  its competitive  position and no
assurance can be given that others will not independently develop  substantially
equivalent  proprietary information and  techniques or otherwise  gain access to
the Company's trade secrets or disclose such technology, or that the Company can
meaningfully protect its right  to its trade secrets.  See "Business --  Patents
and Proprietary Technology."
 
    GOVERNMENT  REGULATION.   The manufacture  and sale  of diagnostic products,
including the  L-D-X System,  are subject  to extensive  regulation by  numerous
governmental  authorities,  principally  the  FDA  and  corresponding  state and
foreign regulatory agencies. The Company will not be able to commence  marketing
or  commercial sales  in the  United States  of any  of the  new tests  until it
receives clearance or approval  from the FDA. The  process of obtaining FDA  and
other  required regulatory  clearances and  approvals is  lengthy, expensive and
uncertain. As a result, there can be no assurance that any of the Company's  new
tests  under development, even if successfully  developed, will ever obtain such
clearance  or  approval.  Additionally,  certain  material  changes  to  medical
products  already cleared or approved by the FDA are also subject to further FDA
review and clearance or approval. The loss of previously obtained clearances, or
failure to comply with existing or  future regulatory requirements would have  a
material  adverse  effect on  the  Company's business,  financial  condition and
results of  operations.  The L-D-X  Analyzer  and all  existing  test  cassettes
required 510(k) clearance. A 510(k) clearance is subject to continual review and
later discovery of previously unknown problems may result in restrictions on the
product's  marketing or withdrawal  of the product from  the market. In general,
the Company  intends  to develop  and  market  tests that  will  require  510(k)
clearance.  It  generally takes  from four  to  twelve months  from the  date of
submission to obtain  510(k) clearance,  but it  can take  longer. In  addition,
certain  of the Company's products under development,  such as the PSA test, may
require submission of a PMA application which  is a much longer and more  costly
process.  A  PMA  application  must  be  filed  if  a  proposed  device  is  not
substantially equivalent to a legally marketed Class I or Class II device, or if
it is a Class III device for which the FDA has called for PMAs. See "Business --
Government Regulation." A PMA application may be submitted to the FDA only after
clinical trials and  the required patient  follow-up for a  particular test  are
successfully  completed. Upon filing  of a PMA application,  the FDA commences a
review process that generally takes  one to three years  from the date on  which
the  PMA application is accepted for  filing, but may take significantly longer.
There can be  no assurance that  the Company's products  under development  will
require  only  510(k) clearance  rather than  the more  lengthy PMA  approval. A
requirement that  the  Company file  a  PMA application  for  a new  test  would
significantly  delay the Company's ability to market such test and significantly
increase the costs of development. See "Business -- Government Regulation."
 
    The use  of Cholestech's  products  and those  of  its competitors  is  also
affected  by CLIA and  related federal and state  regulations, which provide for
regulation of  laboratory  testing.  The scope  of  these  regulations  includes
quality   control,   proficiency  testing,   personnel  standards   and  federal
inspections.
 
                                       9
<PAGE>
CLIA categorizes tests as "waived," or as being "moderately complex" or  "highly
complex,"  on  the  basis of  specific  criteria.  Prior to  January  1996, CLIA
categorized the  L-D-X System  as  moderately complex.  The testing  of  control
materials  on the L-D-X System, as  required by CLIA for laboratories performing
moderately complex  tests, involved  the additional  daily expense  of two  test
cassettes  and  control materials,  and  adversely affected  the  cost effective
utilization of the L-D-X System by low volume users. In January 1996, the  L-D-X
System and the total cholesterol ("TC"), HDL, Triglycerides and Glucose tests in
any combination were reclassified as waived under CLIA. In order to successfully
commercialize  the  tests  that  are currently  under  development,  the Company
believes that it will be critical to obtain waived classification for such tests
under CLIA.  There can  be no  assurance that  any new  tests developed  by  the
Company will qualify for the waived classification. Any failure of the new tests
to  obtain waived status under CLIA  will adversely impact the Company's ability
to commercialize such tests, which could  have a material adverse effect on  the
Company's  business, financial condition and results of operations. In addition,
there can be no assurance that any future amendment of CLIA or the  promulgation
of  additional regulations impacting laboratory testing will not have an adverse
effect on the Company's ability to market the L-D-X System. For example, if CLIA
regulations were modified in a  manner that reduced regulatory requirements  and
burdens  faced by competitive  products, any competitive  advantage of the L-D-X
System's waived status would be reduced or eliminated.
 
    The Company's manufacturing processes, as well as in certain instances those
of its contract manufacturers are also  subject to stringent federal, state  and
local  regulations governing the use, generation, manufacture, storage, handling
and disposal  of certain  materials and  wastes. The  Company and  its  contract
manufacturers must economically manufacture products in compliance with federal,
state  and foreign regulations regarding the manufacture of health care products
and diagnostic devices, including  current Good Manufacturing Practice  ("cGMP")
regulations  and similar foreign regulations and  state and local health, safety
and environmental regulations, which include testing, control and  documentation
requirements.  Failure  to  comply  with cGMP  and  other  applicable regulatory
requirements  by  the  Company  and  in  certain  circumstances,  its   contract
manufacturers,  including marketing  products for unapproved  uses, could result
in, among other  things, warning letters,  fines, injunctions, civil  penalties,
recall  or  seizure  of products,  total  or partial  suspension  of production,
refusal of the government to grant premarket clearance or premarket approval for
devices, withdrawal of approvals and  criminal prosecution. Changes in  existing
regulations  or  adoption  of  new governmental  regulations  or  policies could
prevent or delay regulatory approval of the Company's products. There can be  no
assurance  that the Company will  not be required to  incur significant costs in
the future in  complying with manufacturing  and environmental regulations.  See
"Business -- Government Regulation."
 
    UNCERTAINTY  RELATING TO THIRD  PARTY REIMBURSEMENT.   In the United States,
health  care  providers,  such  as  hospitals  and  physicians,  that   purchase
diagnostic  products such as the Company's L-D-X System, generally rely on third
party payors, principally private health  insurance plans, federal Medicare  and
state  Medicaid, to reimburse all or part of  the cost of the procedure in which
the product is being used. The  Company's ability to commercialize its  products
successfully  in the United  States will depend  in part on  the extent to which
reimbursement for  the costs  of such  products and  related treatment  will  be
available  from government  health authorities  (such as  HCFA, which determines
Medicare reimbursement levels), private health insurers and other organizations.
Such third party payors can affect the pricing or the relative attractiveness of
the Company's  products  by  regulating  the  maximum  amount  of  reimbursement
provided  by such  payors for testing  services. Reimbursement  is currently not
available for certain uses of the  Company's products. For example, the cost  of
the  L-D-X System  is generally not  subject to reimbursement  by government and
other third party  payors. In  addition, the  tests performed  by public  health
departments,  corporate wellness  programs and other  large volume  users in the
screening market  are  generally  not subject  to  reimbursement.  In  addition,
certain  health care providers are moving towards a managed care system in which
such providers contract to  provide comprehensive health care  for a fixed  cost
per patient. Managed care providers are attempting to control the cost of health
care  by  authorizing  fewer elective  procedures,  such as  screening  of blood
disease levels. The Company is  unable to predict what  changes will be made  in
the  reimbursement methods utilized by third  party payors. The Company could be
adversely affected by changes in
 
                                       10
<PAGE>
reimbursement  policies  of   governmental  or  private   health  care   payors,
particularly  to the extent any such changes affect reimbursement for procedures
in which the Company's  products are used. Third  party payors are  increasingly
scrutinizing  and  challenging  the  prices  charged  for  medical  products and
services. Decreases  in  reimbursement amounts  for  tests performed  using  the
Company's  products may decrease amounts  physicians and other practitioners are
able to  charge patients,  which  in turn  may  adversely affect  the  Company's
ability  to sell its products  on a profitable basis.  Failure by physicians and
other users  to obtain  reimbursement from  third party  payors, or  changes  in
government  and  private third  party payors'  policies toward  reimbursement of
tests employing the Company's products could  have a material adverse effect  on
the  Company's business.  Given the  efforts to  control and  reduce health care
costs in the  United States  in recent  years, there  can be  no assurance  that
currently available levels of reimbursement will continue to be available in the
future for the Company's existing products or products under development.
 
    Effective  October 1, 1991,  HCFA adopted new  regulations providing for the
inclusion of  capital-related costs  in the  prospective payment  system,  under
which providers are reimbursed on a per-diagnosis basis at fixed rates unrelated
to  actual costs, based on diagnostic related groups ("DRGs"). Under this system
of reimbursement, equipment costs generally  will not be reimbursed  separately,
but  rather will be included in a single, fixed-rate, per patient reimbursement.
These regulations are being phased in over a ten year period, and, although  the
full implications of these regulations cannot yet be known, the Company believes
that  the  new  regulations will  place  more pressure  on  hospitals' operating
margins, causing them  to limit  capital expenditures.  These regulations  could
have  an adverse effect  on the Company  if hospitals decide  to defer obtaining
medical  equipment  as  a  result  of  any  such  limitation  on  their  capital
expenditures.  The  Company is  unable  to predict  what  adverse impact  on the
Company, if any, additional  government regulations, legislation or  initiatives
or  changes by  other payors affecting  reimbursement or other  matters that may
influence decisions to obtain medical equipment may have.
 
    In addition, market  acceptance of the  Company's products in  international
markets  is dependent,  in part, upon  the availability  of reimbursement within
prevailing health care  payment systems. Reimbursement  and health care  payment
systems in international markets vary significantly by country, and include both
government sponsored health care and private insurance.
 
    The  Company believes that  the overall escalating  cost of medical products
and services has led to and will continue to lead to increased pressures on  the
health  care industry, both foreign and domestic, to reduce the cost of products
and services,  including  products offered  by  the  Company. There  can  be  no
assurance  as  to  either United  States  or  foreign markets  that  third party
reimbursement  and  coverage  will  be  available  or  adequate,  that   current
reimbursement  amounts  will  not be  decreased  in  the future  or  that future
legislation, regulation, or  reimbursement policies of  third party payors  will
not  otherwise adversely  affect the  demand for  the Company's  products or its
ability to sell its products on a profitable basis. See "Business -- Third Party
Reimbursement."
 
    FLUCTUATIONS IN QUARTERLY RESULTS.   The Company may experience  significant
fluctuations in revenues and results of operations on a quarter to quarter basis
in  the  future.  Quarterly operating  results  will fluctuate  due  to numerous
factors, including  the timing  and  level of  market  acceptance of  the  L-D-X
System, particularly by POLs, the timing of introduction and availability of new
tests,  the  timing  and  level  of  expenditures  associated  with  new product
development activities, the  timing and  level of  expenditures associated  with
expansion  of  sales  and  marketing  activities  and  overall  operations,  the
Company's ability to cost effectively expand cassette manufacturing capacity and
maintain consistently acceptable  yields in  the manufacture  of cassettes,  the
timing  of establishment of strategic  distribution arrangements and the success
of the activities conducted under such arrangements, variations in manufacturing
efficiencies,  changes  in  demand   for  its  products,  order   cancellations,
competition,  changes in government regulation and  other factors, the timing of
significant orders  from  and  shipments  to  customers,  and  general  economic
conditions.  These factors are difficult to forecast, and these or other factors
could have  a  material adverse  effect  on the  Company's  business,  financial
condition  and  results  of  operations. Fluctuations  in  quarterly  demand for
products may  adversely affect  the continuity  of the  Company's  manufacturing
operations,  increase  uncertainty in  operational  planning, disrupt  cash flow
 
                                       11
<PAGE>
from operations and contribute to the  volatility of the Company's stock  price.
The  Company's expenses are  based in part  on the Company's  expectations as to
future revenue levels  and to a  large extent are  fixed in the  short term.  If
revenues  do not meet expectations,  the Company's business, financial condition
and results of operations  could be materially  adversely affected. The  Company
believes  that period  to period  comparisons of  its operating  results are not
necessarily meaningful and should  not be relied upon  as indications of  future
performance.  As a result  of the foregoing  factors, it is  likely that in some
future quarter the  Company's revenue  or operating  results will  be below  the
expectations of public market analysts and investors. In such event the price of
the   Company's  Common  Stock  could  be  materially  adversely  affected.  See
"Management's Discussion  and Analysis  of Financial  Condition and  Results  of
Operations" and "Business -- Manufacturing."
 
    NEED  TO  MANAGE EXPANDING  OPERATIONS.   If  the  Company is  successful in
achieving market acceptance for the L-D-X  System, the Company will be  required
to expand its operations, particularly in the areas of research and development,
sales  and marketing and manufacturing. As the Company expands its operations in
these  areas,  such  expansion   will  likely  result   in  new  and   increased
responsibilities  for management personnel and place significant strain upon the
Company's  management,  operating  and  financial  systems  and  resources.   To
accommodate  any  such  growth  and compete  effectively,  the  Company  will be
required to implement and improve information systems, procedures and  controls,
and  to expand, train, motivate and manage  its work force. The Company's future
success will depend to a  significant extent on the  ability of its current  and
future  management personnel to operate effectively, both independently and as a
group. There  can  be  no  assurance  that  the  Company's  personnel,  systems,
procedures  and  controls  will  be adequate  to  support  the  Company's future
operations. Any  failure to  implement and  improve the  Company's  operational,
financial  and  management  systems  or to  expand,  train,  motivate  or manage
employees as required by  future growth, if any,  could have a material  adverse
effect on the Company's business, financial condition and results of operations.
See  "-- Dependence on Retention and  Attraction of Key Employees" and "Business
- -- Employees" and "Management."
 
    DEPENDENCE ON SUPPLIERS.  Certain key  components and raw materials used  in
the   manufacturing  of  the  Company's   products  are  currently  provided  by
single-source vendors. Although  the Company believes  that alternative  sources
for  such components and raw materials are available, any supply interruption in
a single-sourced  raw material  would  have a  material  adverse effect  on  the
Company's  ability to  manufacture products  until a  new source  of supply were
qualified. There can  be no  assurance that the  Company will  be successful  in
qualifying  additional sources on a  timely basis or at  all, which would have a
material adverse effect on the  Company's business. In addition, an  uncorrected
impurity  or  supplier's variation  in  a raw  material,  either unknown  to the
Company or incompatible with the  Company's manufacturing process, could have  a
material  adverse effect on the Company's ability to manufacture products. Also,
because the Company is a small customer  of many of its suppliers, there can  be
no  assurance that  suppliers will  devote adequate  resources to  supplying the
Company's needs. Any interruption or reduction  in the future supply of any  key
components  or raw materials  currently obtained from  single or limited sources
could have  a  material adverse  effect  on the  Company's  business,  operating
results   and  financial  condition  in  any  given  period.  See  "Business  --
Manufacturing."
 
    DEPENDENCE ON  RETENTION AND  ATTRACTION OF  KEY EMPLOYEES.   The  Company's
success  depends in significant  part upon the continued  service of certain key
scientific, technical, regulatory and  managerial personnel, and its  continuing
ability to attract and retain additional highly qualified scientific, technical,
clinical, regulatory and managerial personnel. Competition for such personnel is
intense,  and there can be no assurance that  the Company will be able to retain
such personnel  or  that  it  can  attract  or  retain  other  highly  qualified
scientific,  technical,  clinical, regulatory  and  managerial personnel  in the
future, including key sales and marketing personnel. In particular, the  Company
is  currently  actively  recruiting  a  new  executive  officer  to  replace the
Company's former Executive Vice President  of Marketing and Sales, who  resigned
in  April 1996.  The loss of  key personnel or  the inability to  hire or retain
qualified personnel,  in  particular  a  new  executive  officer  of  sales  and
marketing,  could have  a material adverse  effect upon  the Company's business,
financial condition and results of operations.
 
                                       12
<PAGE>
    POSSIBLE FUTURE  CAPITAL  REQUIREMENTS.    The  Company  intends  to  expend
substantial  funds for research and product  development, expansion of sales and
marketing activities,  expansion of  manufacturing  capacity and  other  working
capital  and general corporate purposes. Although  the Company believes that the
net proceeds  of the  Offering, together  with its  unrestricted cash  balances,
internally  generated funds, bank borrowings under  existing lines of credit and
proceeds from issuances of Common Stock to Metra Biosystems, will be  sufficient
to  meet its capital  requirements for the  foreseeable future, there  can be no
assurance that the Company will  not require additional financing. For  example,
the  Company  may  be  required  to expend  greater  than  anticipated  funds if
unforeseen difficulties arise in  expanding manufacturing capacity for  existing
cassettes  or  in  the  course of  completing  required  additional development,
obtaining necessary regulatory approvals, obtaining waived status under CLIA  or
introducing  or scaling  up manufacturing  for new  tests. The  Company's future
liquidity and capital requirements will depend upon numerous additional factors,
including the  costs and  timing  of expansion  of manufacturing  capacity,  the
number  and type of new tests the Company seeks to develop, the success of these
development efforts, the costs  and timing of expansion  of sales and  marketing
activities,  the extent  to which the  Company's existing and  new products gain
market acceptance, competing technological and market developments, the progress
of commercialization efforts of the  Company's distributors, the costs  involved
in  preparing, filing, prosecuting, maintaining  and enforcing patent claims and
other intellectual property rights, developments related to regulatory and third
party reimbursement  matters and  CLIA, and  other factors.  In the  event  that
additional  financing is needed, the Company  may seek to raise additional funds
through public  or  private  financing,  collaborative  relationships  or  other
arrangements.  Any additional equity financing  may be dilutive to shareholders,
and  debt   financing,  if   available,  may   involve  restrictive   covenants.
Collaborative  arrangements, if necessary to raise additional funds, may require
the Company to relinquish its rights to certain of its technologies, products or
marketing territories. The failure of the  Company to raise capital when  needed
could  have  a  material adverse  effect  on the  Company's  business, financial
condition and  results  of operations.  There  can  be no  assurance  that  such
financing,  if required, will be available on satisfactory terms, if at all. See
"Use of  Proceeds"  and  "Management's  Discussion  and  Analysis  of  Financial
Condition and Results of Operations -- Liquidity and Capital Resources."
 
    SUFFICIENCY  AND AVAILABILITY OF  PRODUCT LIABILITY INSURANCE.   Sale of the
Company's products entails risk of product liability claims. The medical testing
industry has  historically  been  litigious, and  the  Company  faces  financial
exposure  to product  liability claims  in the  event that  use of  its products
result in personal injury. The Company  also faces the possibility that  defects
in the design or manufacture of its products might necessitate a product recall.
There  can be no  assurance that the  Company will not  experience losses due to
product liability  claims  or  recalls  in the  future.  The  Company  currently
maintains  product liability insurance with coverage  limits of $5.0 million per
occurrence and  $5.0 million  annually in  the aggregate,  and there  can be  no
assurance  that the coverage limits of  the Company's insurance policies will be
adequate. Such  insurance is  expensive,  difficult to  obtain  and may  not  be
available  in the  future on acceptable  terms, or  at all. No  assurance can be
given that product  liability insurance  can be maintained  in the  future at  a
reasonable  cost or in sufficient amounts  to protect the Company against losses
due to liability. An inability to maintain insurance at an acceptable cost or to
otherwise protect against potential product  liability could prevent or  inhibit
the  continued  commercialization  of  the Company's  products.  In  addition, a
product liability  claim in  excess of  relevant insurance  coverage or  product
recall could have a material adverse effect on the Company's business, financial
condition  and results  of operations.  See "Business  -- Product  Liability and
Insurance."
 
    UNCERTAINTY  RELATED  TO  HEALTH  CARE  REFORM.    Political,  economic  and
regulatory  influences are  subjecting the  health care  industry in  the United
States to  fundamental  change. The  Company  anticipates that  Congress,  state
legislatures  and  the  private  sector  will  continue  to  review  and  assess
alternative health care delivery and payment systems. Potential approaches  that
have  been considered include  mandated basic health  care benefits, controls on
health care  spending  through  limitations  on the  growth  of  private  health
insurance  premiums and  Medicare and Medicaid  spending, the  creation of large
insurance purchasing groups, price controls and other fundamental changes to the
health care delivery
 
                                       13
<PAGE>
system. Legislative debate  is expected to  continue in the  future, and  market
forces  are expected  to demand reduced  costs. The Company  cannot predict what
impact the adoption of any federal or state health care reform measures,  future
private sector reform or market forces may have on its business.
 
    MANAGEMENT  DISCRETION OVER PROCEEDS OF THE  OFFERING.  Although the Company
expects to use approximately $6.0 million  of the net proceeds of this  Offering
for  repayment  of  indebtedness,  for research  and  development,  expansion of
manufacturing capacity, and expansion of sales and marketing capabilities during
fiscal 1997, the  Company's management will  retain broad discretion  as to  the
allocation  of a significant portion  of the net proceeds  of this Offering. See
"Use of Proceeds."
 
    ISSUANCE OF PREFERRED STOCK COULD DELAY OR PREVENT CORPORATE TAKEOVER.   The
Board  of  Directors  has the  authority  to  issue up  to  5,000,000  shares of
undesignated  Preferred  Stock  and   to  determine  the  rights,   preferences,
privileges and restrictions of such shares without any further vote or action by
the  shareholders. The issuance  of Preferred Stock  under certain circumstances
could have the  effect of  delaying or  preventing a  change in  control of  the
Company  or otherwise  adversely affecting the  rights of the  holders of Common
Stock. See "Description of Capital Stock."
 
    POTENTIAL VOLATILITY OF  STOCK PRICE.   The market  price of  the shares  of
Common  Stock, like that of the common  stock of many other medical products and
high technology companies, has in the past been, and is likely in the future  to
continue  to be highly  volatile. Factors such as  fluctuations in the Company's
operating results, announcements of technological innovations or new  commercial
products  by the Company  or competitors, government  regulation, changes in the
current structure of the health care financing and payment systems, developments
in or disputes regarding patent or other proprietary rights, economic and  other
external  factors and general market conditions may have a significant effect on
the market price of the Common Stock.  Moreover, the stock market has from  time
to   time  experienced  extreme   price  and  volume   fluctuations  which  have
particularly affected the market prices for medical products and high technology
companies and which have  often been unrelated to  the operating performance  of
such  companies. These broad  market fluctuations, as  well as general economic,
political and market conditions,  may adversely affect the  market price of  the
Company's  Common Stock.  In the  past, following  periods of  volatility in the
market price  of a  company's stock,  securities class  action litigations  have
occurred  against  the issuing  company.  There can  be  no assurance  that such
litigation will  not occur  in the  future  with respect  to the  Company.  Such
litigation  could result  in substantial costs  and a  diversion of management's
attention and  resources, which  could have  a material  adverse effect  on  the
Company's  business,  operating  results and  financial  condition.  Any adverse
determination in such litigation could  also subject the Company to  significant
liabilities. See "Price Range of Common Stock."
 
    DILUTION.   Investors  participating in  the Offering  will incur immediate,
substantial  dilution.  To  the  extent  outstanding  options  to  purchase  the
Company's  Common  Stock  are exercised,  there  will be  further  dilution. See
"Dilution."
 
    ABSENCE OF DIVIDENDS.   The Company  has not paid  any cash dividends  since
inception  and  does not  anticipate paying  cash  dividends in  the foreseeable
future. See "Dividend Policy."
 
                                  THE COMPANY
 
    Cholestech was incorporated  under the laws  of the state  of California  on
February  2, 1988. The Company's principal executive offices are located at 3347
Investment Boulevard, Hayward,  California 94545,  and its  telephone number  is
(510) 732-7200.
 
    Cholestech,  L-D-X and  the logo are  registered trademarks  of the Company.
This Prospectus also includes trademarks of companies other than the Company.
 
                                       14
<PAGE>
                                USE OF PROCEEDS
 
    The net proceeds to  the Company from  the sale of  the 3,000,000 shares  of
Common  Stock offered  hereby are  estimated to  be approximately  $16.9 million
($19.6 million if the Underwriters' over-allotment option is exercised in full),
based on  an assumed  Offering price  of $6.25  per share,  and after  deducting
estimated  underwriting discounts and commissions  and the estimated expenses of
the Offering.
 
    From these estimated net  proceeds, the Company  will repay the  outstanding
balances  of the Company's (i) bank line of credit (approximately $250,000 as of
March 31, 1996), which borrowings bore interest  at 8.25% per annum as of  March
31,  1996, which mature on October 31,  1996, and which were incurred to provide
working capital and (ii)  a long-term note of  approximately $1.3 million as  of
March 31, 1996, which borrowings bear interest at a rate of 16% per annum, which
are  required to be repaid in  36 monthly installments of approximately $53,000,
and which  were incurred  to provide  working capital.  The balance  of the  net
proceeds  will be used for research and  development related to the expansion of
test menus, of  which approximately $2.0  million has been  budgeted for  fiscal
1997,  capital expenditures related  to expansion of  manufacturing capacity, of
which approximately $2.0 million has been budgeted for fiscal 1997, expansion of
sales and  marketing  capabilities, of  which  approximately $500,000  has  been
budgeted  for fiscal 1997,  and for other working  capital and general corporate
purposes. The  Company may  also  use a  portion of  the  net proceeds  for  the
acquisition  of technologies, businesses  or products that  are complementary to
those of  the  Company, although  no  such  acquisitions are  planned  or  being
negotiated as of the date of this Prospectus, and no portion of the net proceeds
has  been allocated  for any  specific acquisition.  Pending such  uses, the net
proceeds of  this Offering  will be  invested in  short-term, interest  bearing,
investment grade securities.
 
    The  actual amount and timing of net  proceeds of this Offering expended for
each purpose may vary significantly  depending upon many factors, including  the
costs  and timing of expansion of manufacturing capacity, the number and type of
tests the Company seeks  to develop, the success  of these development  efforts,
the  costs and timing of expansion of sales and marketing activities, the extent
to which  the  Company's  existing  and new  products  gain  market  acceptance,
competing    technological   and   market    developments,   the   progress   of
commercialization efforts of the Company's  distributors, the costs involved  in
preparing,  filing,  prosecuting, maintaining  and  enforcing patent  claims and
other intellectual property rights, developments related to regulatory and third
party reimbursement matters and CLIA, and other factors.
 
                                       15
<PAGE>
                          PRICE RANGE OF COMMON STOCK
 
    The Company's Common Stock is quoted on the Nasdaq National Market under the
symbol "CTEC." On May 8,  1996, the last reported  sale price for the  Company's
Common  Stock on the Nasdaq  National Market was $6.25  per share. The following
table sets  forth  the  quarterly high  and  low  closing sale  prices  for  the
Company's Common Stock.
 
<TABLE>
<CAPTION>
                                                                HIGH        LOW
                                                              ---------  ---------
<S>                                                           <C>        <C>
FISCAL YEAR 1995
  First Quarter                                               $    5.25  $    2.50
  Second Quarter                                                   3.25       1.75
  Third Quarter                                                    3.25       1.13
  Fourth Quarter                                                   3.00       1.50
 
FISCAL YEAR 1996
  First Quarter                                               $    2.50  $    1.50
  Second Quarter                                                   3.00       2.13
  Third Quarter                                                    3.75       2.25
  Fourth Quarter                                                   7.56       3.13
 
FISCAL YEAR 1997
  First Quarter (through May 8, 1996)                         $    7.00  $    6.00
</TABLE>
 
    On  May  7, 1996,  there were  approximately  308 holders  of record  of the
Company's Common Stock.
 
                                DIVIDEND POLICY
 
    The Company has never declared or  paid dividends on its capital stock.  The
Company  currently expects  to retain  future earnings,  if any,  to finance the
growth and  development of  its  business and,  therefore, does  not  anticipate
paying   any  cash  dividends  in  the  foreseeable  future.  See  "Management's
Discussion and Analysis of Financial Condition and Results of Operations."
 
                                       16
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the  actual capitalization of the Company  as
of March 31, 1996 and as adjusted to give effect to the sale of 3,000,000 shares
of  Common Stock offered by  the Company hereby at  an assumed Offering price of
$6.25 per  share,  and  after deducting  estimated  underwriting  discounts  and
commissions  and the  estimated expenses  of the  Offering, and  the anticipated
application of the estimated net proceeds therefrom. See "Use of Proceeds."
 
<TABLE>
<CAPTION>
                                                                                              MARCH 31, 1996
                                                                                        --------------------------
                                                                                         ACTUAL    AS ADJUSTED (2)
                                                                                        ---------  ---------------
<S>                                                                                     <C>        <C>
                                                                                              (IN THOUSANDS)
Short-term debt including current portion of long-term liabilities (1)................  $     782    $        33
                                                                                        ---------  ---------------
                                                                                        ---------  ---------------
Long-term liabilities, net of current portion (1).....................................  $     810    $        11
                                                                                        ---------  ---------------
Shareholders' equity:
  Preferred Stock, no par value; 5,000,000 shares authorized, none issued and
   outstanding, actual and as adjusted................................................     --            --
  Common Stock, no par value; 25,000,000 shares authorized, 8,131,824 shares issued
   and outstanding, actual; 11,131,824 shares issued and outstanding, as adjusted
   (2)................................................................................     55,644         72,582
  Accumulated deficit.................................................................    (49,662)       (49,662)
                                                                                        ---------  ---------------
    Total shareholders' equity........................................................      5,982         22,920
                                                                                        ---------  ---------------
      Total capitalization............................................................  $   6,792    $    22,931
                                                                                        ---------  ---------------
                                                                                        ---------  ---------------
</TABLE>
 
- ------------------------
(1) See Note 4 of Notes to Financial Statements.
 
(2) Excludes: (i)  518,244 shares  of  Common Stock  issuable upon  exercise  of
    options  outstanding as of March 31,  1996, with a weighted average exercise
    price of $3.49 per share; (ii)  39,242 shares of Common Stock issuable  upon
    exercise  of warrants  outstanding as  of March  31, 1996,  with an exercise
    price of $3.50 per share; (iii) 183,412 shares of Common Stock reserved  for
    future  issuance  under the  Company's stock  plans;  (iv) 39,526  shares of
    Common Stock issued to Metra Biosystems in  May 1996 at a purchase price  of
    $6.325  per share; and (v) an aggregate of up to $750,000 of Common Stock to
    be purchased by Metra  Biosystems at fair market  value upon achievement  of
    certain milestones by the Company. See "Management's Discussion and Analysis
    of  Financial Condition and  Results of Operations,"  "Business -- Strategic
    Relationships," "Management -- 1988  Stock Incentive Program," "--  Employee
    Stock  Purchase Plan," "Description of Capital Stock"  and Notes 7 and 10 of
    Notes to Financial Statements.
 
                                       17
<PAGE>
                                    DILUTION
 
    The net  tangible book  value of  the Company  at March  31, 1996  was  $5.7
million,  or $0.70 per share. Net tangible book  value per share is equal to the
Company's net  tangible  assets  (tangible  assets of  the  Company  less  total
liabilities)  divided  by  the number  of  shares of  Common  Stock outstanding.
Without taking into account any other  changes in net tangible book value  after
March  31, 1996 other than to give effect to the sale of the 3,000,000 shares of
Common Stock by  the Company in  the Offering  at an assumed  Offering price  of
$6.25  per  share  and  after  deducting  estimated  underwriting  discounts and
commissions and  the estimated  expenses  of the  Offering,  the pro  forma  net
tangible  book value of the  Company as of March 31,  1996 would have been $22.6
million, or $2.03 per share. This represents an immediate increase in pro  forma
net  tangible book  value of  $1.33 per  share to  existing shareholders  and an
immediate dilution in pro forma  net tangible book value  of $4.22 per share  to
new  investors. The  following table  sets forth the  per share  dilution to new
investors in the Offering:
 
<TABLE>
<S>                                                                    <C>          <C>
Assumed Offering price per share.....................................               $    6.25
  Net tangible book value per share at March 31, 1996................   $    0.70
  Increase per share attributable to new investors...................        1.33
                                                                            -----
Pro forma net tangible book value per share after the Offering.......                    2.03
                                                                                    ---------
Dilution per share to new investors..................................               $    4.22
                                                                                    ---------
                                                                                    ---------
</TABLE>
 
    The foregoing  computations  exclude: (i)  518,244  shares of  Common  Stock
issuable  upon exercise  of options  outstanding as  of March  31, 1996,  with a
weighted average exercise price of $3.49 per share; (ii) 39,242 shares of Common
Stock issuable upon exercise of warrants outstanding as of March 31, 1996,  with
an  exercise price  of $3.50  per share;  (iii) 183,412  shares of  Common Stock
reserved for future issuance under the Company's stock plans; (iv) 39,526 shares
of Common Stock issued to  Metra Biosystems in May 1996  at a purchase price  of
$6.325  per share; and (v) an aggregate of  up to $750,000 of Common Stock to be
purchased by Metra Biosystems at fair  market value upon achievement of  certain
milestones  by the  Company. To  the extent that  such options  and warrants are
exercised or  such shares  are issued,  there will  be further  dilution to  new
investors.  See "Management's Discussion and Analysis of Financial Condition and
Results of Operations,"  "Business -- Strategic  Relationships," "Management  --
1988  Stock Incentive Program," "--  Employee Stock Purchase Plan," "Description
of Capital Stock" and Notes 7 and 10 of Notes to Financial Statements.
 
                                       18
<PAGE>
                            SELECTED FINANCIAL DATA
 
    The following selected financial data should be read in conjunction with the
Company's  Financial Statements  and Notes thereto  and "Management's Discussion
and  Analysis  of  Financial  Condition  and  Results  of  Operations"  included
elsewhere  in this Prospectus. The statement  of operations data set forth below
for the fiscal years ended March 31,  1994, 1995 and 1996 and the balance  sheet
data  as of March 31, 1995 and 1996 are derived from financial statements of the
Company that have been audited by Price Waterhouse LLP, independent accountants,
which are included elsewhere in this Prospectus, and are qualified by  reference
to such financial statements and notes thereto. The statement of operations data
for the fiscal years ended March 31, 1992 and 1993 and the balance sheet data as
of  March 31, 1992, 1993  and 1994 are derived  from financial statements of the
Company that have  been audited  by Price Waterhouse  LLP and  are not  included
herein.
<TABLE>
<CAPTION>
                                                                          YEAR ENDED MARCH 31,
                                                          -----------------------------------------------------
                                                            1992       1993       1994       1995       1996
                                                          ---------  ---------  ---------  ---------  ---------
                                                                  (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                       <C>        <C>        <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
  Revenues:
    Products............................................  $     939  $   3,744  $   3,029  $   4,038  $   6,873
    Licenses............................................        579         --         --         --         --
                                                          ---------  ---------  ---------  ---------  ---------
                                                              1,518      3,744      3,029      4,038      6,873
  Cost of products sold.................................        565      4,908      4,972      3,933      4,505
                                                          ---------  ---------  ---------  ---------  ---------
  Gross profit (loss)...................................        953     (1,164)    (1,943)       105      2,368
                                                          ---------  ---------  ---------  ---------  ---------
  Operating expenses:
    Research and development............................      6,124      1,843      2,134        715        714
    Sales and marketing.................................      1,446      2,171      2,909      2,694      3,168
    General and administrative..........................      2,373      3,133      2,288      1,983      1,376
                                                          ---------  ---------  ---------  ---------  ---------
      Total operating expenses..........................      9,943      7,147      7,331      5,392      5,258
                                                          ---------  ---------  ---------  ---------  ---------
  Loss from operations..................................     (8,990)    (8,311)    (9,274)    (5,287)    (2,890)
  Interest income, net..................................        100        246        364        243        144
                                                          ---------  ---------  ---------  ---------  ---------
  Net loss..............................................  $  (8,890) $  (8,065) $  (8,910) $  (5,044) $  (2,746)
                                                          ---------  ---------  ---------  ---------  ---------
                                                          ---------  ---------  ---------  ---------  ---------
  Net loss per share (1)................................  $  (13.38) $   (1.57) $   (1.14) $   ( .63) $   ( .34)
                                                          ---------  ---------  ---------  ---------  ---------
                                                          ---------  ---------  ---------  ---------  ---------
  Weighted average common shares (1)....................        664      5,122      7,791      7,954      8,042
                                                          ---------  ---------  ---------  ---------  ---------
                                                          ---------  ---------  ---------  ---------  ---------
 
<CAPTION>
 
                                                                                MARCH 31,
                                                          -----------------------------------------------------
                                                            1992       1993       1994       1995       1996
                                                          ---------  ---------  ---------  ---------  ---------
                                                                             (IN THOUSANDS)
<S>                                                       <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
  Cash, cash equivalents and restricted marketable
   securities...........................................  $   4,355  $  18,964  $  11,058  $   5,230  $   4,111
  Working capital.......................................      1,942     14,660      9,239      5,929      4,442
  Total assets..........................................      8,730     25,399     15,685     10,041      9,645
  Long-term liabilities.................................        650        361         54         44        810
  Accumulated deficit...................................    (24,898)   (32,962)   (41,872)   (46,916)   (49,662)
  Shareholders' equity..................................      4,264     21,991     13,412      8,513      5,982
</TABLE>
 
- --------------
(1)  See Note 1  of Notes to  Financial Statements for  an explanation of shares
    used in computing net loss per share.
 
(2) The Company's fiscal year is a 52- 53 week period ending on the last  Friday
    in  March.  All fiscal  years referenced  in this  Prospectus consist  of 52
    weeks, except fiscal 1995, which consisted of 53 weeks. For convenience, the
    Company has indicated in this Prospectus that its fiscal year ends on  March
    31.
 
                                       19
<PAGE>
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
    THE FOLLOWING DISCUSSION OF OPERATIONS AND FINANCIAL CONDITION OF CHOLESTECH
SHOULD  BE READ IN  CONJUNCTION WITH THE FINANCIAL  STATEMENTS AND NOTES THERETO
INCLUDED ELSEWHERE  IN THIS  PROSPECTUS. SPECIAL  NOTE: CERTAIN  STATEMENTS  SET
FORTH  BELOW CONSTITUTE "FORWARD-LOOKING  STATEMENTS" WITHIN THE  MEANING OF THE
REFORM ACT. SEE "SPECIAL  NOTE REGARDING FORWARD-LOOKING  STATEMENTS" ON PAGE  2
FOR ADDITIONAL FACTORS RELATING TO SUCH STATEMENTS.
 
GENERAL
 
    The  Company develops, manufactures and markets  a proprietary point of care
diagnostic system which  measures specific analytes  to detect various  diseases
and  disorders  within five  minutes using  a  single drop  of whole  blood. The
Company has experienced significant operating losses since inception and, as  of
March 31, 1996, had an accumulated deficit of $49.7 million. The Company has not
generated  significant  revenues to  date, and  there can  be no  assurance that
significant revenues will ever  be achieved. The  Company is developing  certain
additional tests designed to extend the L-D-X System's capabilities. The Company
believes  that  its future  growth will  depend,  in part,  upon its  ability to
complete development and  successfully introduce  these new  tests. The  Company
expects  to continue to  incur operating losses  as well as  negative cash flows
from operations as it expands product  research and development efforts for  new
test  panels,  pursues regulatory  clearances and  approvals, expands  sales and
marketing activities to address the monitoring market, and develops and  expands
manufacturing  capacity for  existing and new  test panels.  The development and
commercialization of the  new tests will  require additional development,  sales
and  marketing,  manufacturing and  other expenditures.  The required  level and
timing of  such  expenditures  will  impact the  Company's  ability  to  achieve
profitability and positive cash flows from operations.
 
RESULTS OF OPERATIONS
 
  YEARS ENDED MARCH 31, 1995 AND 1996
 
    REVENUES.   The Company's  revenues increased by 70.2%  from $4.0 million in
fiscal 1995 to $6.9 million in fiscal 1996. Domestic revenues increased by 72.2%
from $3.2  million  in  fiscal  1995  to  $5.6  million  in  fiscal  1996  while
international  revenues increased by 62.2% from  $817,000 in fiscal 1995 to $1.3
million in fiscal 1996. The increase in revenues reflected increased unit  sales
of   the  L-D-X  Analyzer   and  test  cassettes   to  hospitals,  managed  care
organizations, public  health departments,  corporations and  other health  care
providers  in the  screening market. The  Company's product sales  to the United
States monitoring market were minimal in  each fiscal year. The Company  expects
that  international revenues will  continue to decline as  a percentage of total
revenues in future periods as the Company increases sales and marketing  efforts
in the monitoring market in the United States.
 
    COSTS  OF PRODUCTS SOLD.   Costs of products sold  increased 14.5% from $3.9
million in fiscal  1995 to $4.5  million in fiscal  1996, as unit  sales of  the
L-D-X  Analyzer and test cassettes increased. Gross margin was 2.6% and 34.5% in
fiscal 1995 and  1996, respectively.  The improvement  in the  gross margin  was
primarily  attributable  to  improved  cassette  manufacturing  yields, improved
quality assurance procedures  and growth  in the  volume of  units sold.  During
fiscal  1995,  the Company  improved cassette  manufacturing yields  and quality
assurance procedures and  reduced staffing levels  by eliminating technical  and
engineering  positions specific to  initial product development  and scale-up of
manufacturing  capacity.  The  resulting  manufacturing  efficiencies  and  cost
reductions were reflected for the full year of fiscal 1996.
 
    RESEARCH  AND  DEVELOPMENT.    Research  and  development  expenses remained
constant between  fiscal 1995  and fiscal  1996  as a  result of  the  Company's
decision  to concentrate available resources on expansion of sales and marketing
activities for  existing test  panels. However,  the Company  believes that  its
future  revenue growth and profitability will  depend, in part, upon its ability
to complete development
 
                                       20
<PAGE>
and successfully introduce new test panels designed to extend the L-D-X System's
capabilities to include additional tests useful in the screening and  monitoring
markets.  The Company is currently developing additional tests to detect disease
states such  as  metabolic bone  diseases  and disorders,  prostate  cancer  and
diabetes.  Each of these new  tests is at an early  stage of development and the
Company will  be required  to undertake  time consuming  and costly  development
activities  and seek regulatory approval  for these new tests.  As a result, the
Company currently anticipates  that research and  development expenditures  will
increase   significantly   in  future   periods   as  product   development  and
manufacturing scale-up efforts for new tests increase.
 
    SALES AND MARKETING.  Sales and marketing expenses increased 17.6% from $2.7
million in fiscal 1995 to $3.2 million in fiscal 1996. The increase in sales and
marketing expenses  was primarily  attributable to  expansion of  the  Company's
domestic   direct  sales  and   marketing  organization,  increased  commissions
associated with increased product sales  and, to a lesser extent,  participation
in  domestic conferences and trade shows. The Company currently anticipates that
sales and marketing  expenses will  increase in  future periods  as the  Company
expands  sales and  marketing activities  to address  the monitoring  market, in
particular the POL segment of the monitoring market.
 
    GENERAL AND ADMINISTRATIVE.   General and administrative expenses  decreased
30.6%  from $2.0  million in  fiscal 1995  to $1.4  million in  fiscal 1996. The
decrease in  general  and administrative  expenses  was primarily  a  result  of
reduced  headcount and  reduced expenditures for  rent and  insurance. In fiscal
1995,  general  and  administrative  expenses  included  a  one-time  charge  of
approximately $114,000 as a result of headcount reductions. Absent such one-time
charge, general and administrative expenses for fiscal 1995 would have been $1.9
million.
 
    INTEREST INCOME (EXPENSE), NET.  Interest income was earned on investment of
cash  balances generated from  prior equity financings  of the Company. Interest
expense was incurred on  capital lease financings, the  bank line of credit  and
long-term debt obtained by the Company.
 
  YEARS ENDED MARCH 31, 1994 AND 1995
 
    REVENUES.  Revenues increased 33.3% from $3.0 million in fiscal 1994 to $4.0
million  in fiscal  year 1995.  Domestic revenues  increased by  74.6% from $1.8
million in  fiscal 1994  to $3.2  million in  fiscal 1995,  while  international
revenues  decreased by  31.1% from  $1.2 million in  fiscal 1994  to $817,000 in
fiscal 1995. The increase in domestic revenues reflected an increase in sales of
diagnostic tests to the domestic screening market. The decrease in international
revenues reflected the completion  in fiscal 1994  of the Company's  promotional
activities  with Warner  Lambert/Parke Davis  Corporation ("Warner  Lambert") in
Italy relating to Warner Lambert's hypolipidemic agent, Lopid.
 
    COSTS OF PRODUCTS SOLD.   Costs of products  sold decreased 20.9% from  $5.0
million in fiscal 1994 to $3.9 million in fiscal 1995. Costs of products sold as
a  percentage of total revenues decreased from 164.1% in fiscal 1994 to 97.4% in
fiscal 1995. The decrease was primarily attributable to the Company's successful
completion of  efforts  to improve  cassette  manufacturing yields  and  improve
quality  assurance procedures.  The improvements  in cassette  manufacturing and
quality assurance procedures enabled  the Company to  reduce staffing levels  by
eliminating  technical  and engineering  positions  specific to  initial product
development and expansion of the Company's manufacturing capacity.
 
    RESEARCH AND DEVELOPMENT.  Research and development expenses decreased 66.5%
from $2.1 million in  fiscal 1994 to  $715,000 in fiscal  1995. The decrease  in
research  and  development expenses  was primarily  a  result of  completing the
development of, and  obtaining FDA  approval for,  a TC/HDL/Glucose  test and  a
Lipid  Profile  plus Glucose  test and,  transitioning  to product  marketing in
fiscal 1995 from product  development in fiscal 1994.  The fiscal 1995  expenses
included  $715,000 for new product development  and product enhancements to meet
customer demands while fiscal 1994 expenses included $733,000 for  manufacturing
scale-up  costs and $1.4  million related to continued  development of the L-D-X
System and its related products.
 
    SALES AND MARKETING.  Sales and marketing expenses decreased 7.4% from  $2.9
million in fiscal 1994 to $2.7 million in fiscal 1995. The decrease in sales and
marketing expenses was a direct result of the
 
                                       21
<PAGE>
Company's efforts to improve efficiency. During fiscal 1995, the Company focused
on  increasing  domestic  product sales  while  selectively  targeting potential
sources of  international product  sales. The  strategy allowed  the Company  to
reduce  sales  and  marketing expenses  in  fiscal 1995  although  product sales
increased.
 
    GENERAL AND ADMINISTRATIVE  EXPENSES.  General  and administrative  expenses
decreased 13.3% from $2.3 million in fiscal 1994 to $2.0 million in fiscal 1995.
General  and administrative expenses for fiscal  1995 included a one-time charge
of approximately $114,000  due to a  reduction in the  number of  administrative
personnel.  Absent such one-time charge, general and administrative expenses for
fiscal 1995  would  have been  $1,869,000.  In addition,  fiscal  1994  expenses
included  a net gain of $290,000 upon  the settlement of a dispute in connection
with a licensing  agreement. Absent  such net gain,  general and  administrative
expenses  for fiscal 1994  would have been $2.6  million. After consideration of
the net gain and one-time charge, actual general and administrative expenses for
fiscal 1995  decreased  approximately $709,000  or  28% from  fiscal  1994.  The
decrease  resulted  from the  Company's efforts  to  control costs  and conserve
resources through reduced headcount and improved operating efficiency.
 
    INTEREST INCOME (EXPENSE), NET.  Interest income was earned on investment of
cash balances generated from equity financings of the Company. Interest  expense
was incurred on capital lease financings obtained by the Company.
 
  INCOME TAX CARRYFORWARDS
 
    As  of  March 31,  1996, the  Company had  net operating  loss carryforwards
available to reduce taxable income through 2011 for federal and state income tax
purposes  of  approximately  $46.0  million  and  $21.0  million,  respectively.
Additionally,  the  Company had  research  and development  credit carryforwards
available to reduce income taxes through  2011 for federal and state income  tax
purposes  of approximately $1.5 million and  $493,000, respectively. There is an
annual limitation of approximately $1.5 million for federal and state income tax
reporting purposes on the use of approximately $8.1 million and $1.1 million  of
net  operating losses, and of $390,000 and $160,000 of tax credit carryforwards,
respectively. The Company's  net operating losses  and tax credit  carryforwards
incurred  prior  to  December  1992  are  subject  to  an  annual  limitation of
approximately $5.5 million for federal  and state income tax reporting  purposes
on the use of approximately $28.2 million and $8.1 million of net operating loss
carryforwards,  respectively, and  of $1.2  million and  $379,000 of  tax credit
carryforwards, respectively. If the amount of these limitations are not utilized
in any  year, the  amount not  utilized  increases the  allowable limit  in  the
subsequent year.
 
  IMPACT OF ADOPTION OF NEW ACCOUNTING STANDARDS
 
    In  March 1995, the Financial Accounting Standards Board issued Statement of
Financial Accounting  Standards  No.  121  "Accounting  for  the  Impairment  of
Long-Lived  Assets and  for Long-Lived  Assets to  Be Disposed  Of," ("FAS 121")
which requires the Company to  review for impairment long-lived assets,  certain
identifiable intangibles and goodwill related to those assets whenever events or
changes in circumstances indicate that the carrying amount of an asset might not
be  recoverable. In certain situations, an  impairment loss would be recognized.
The Company will  adopt FAS 121  during fiscal  1997 and, based  on its  initial
evaluation,  does  not expect  its adoption  to  have a  material impact  on the
Company's financial condition or results of operations.
 
    In October 1995, the Financial  Accounting Standards Board issued  Statement
of   Financial  Accounting   Standards  No.  123   "Accounting  for  Stock-Based
Compensation" ("FAS  123")  which  established  a fair  value  based  method  of
accounting   for   stock-based  compensation   plans  and   requires  additional
disclosures for  those  companies who  elect  not to  adopt  the new  method  of
accounting.  The  Company will  adopt FAS  123 during  fiscal 1997.  The Company
intends to continue to  account for employee stock  options using the  intrinsic
value method prescribed by APB Opinion No. 25 and to adopt the "disclosure only"
pro forma alternative described in FAS 123.
 
                                       22
<PAGE>
  POTENTIAL FLUCTUATIONS IN QUARTERLY RESULTS
 
    The  Company may experience significant fluctuations in revenues and results
of operations on a quarter to  quarter basis in the future. Quarterly  operating
results  will fluctuate due to numerous  factors, including the timing and level
of market acceptance of the L-D-X System, particularly with respect to POLs, the
timing of introduction and  availability of new tests,  the timing and level  of
expenditures  associated with new product development activities, the timing and
level of expenditure associated with expansion of sales and marketing activities
and  overall  operations,  the  Company's  ability  to  cost-effectively  expand
cassette  manufacturing capacity and maintain  consistently acceptable yields in
the  manufacture  of  cassettes,  the  timing  of  establishment  of   strategic
distribution  arrangements and  success of  the activities  conducted under such
arrangements, variations in  manufacturing efficiencies, changes  in demand  for
its products based on changes in third party reimbursement, competition, changes
in  government regulation  and other factors,  the timing  of significant orders
from and shipments to customers, and general economic conditions. These  factors
are  difficult to  forecast, and  these or other  factors could  have a material
adverse effect on  the Company's  business, financial condition  and results  of
operations.   Fluctuations   in  quarterly   demand   for  products   and  order
cancellations may adversely affect the continuity of the Company's manufacturing
operations, increase uncertainty in operational planning, disrupt cash flow from
operations and contribute to  the volatility of the  Company's stock price.  The
Company's  expenses are based in part on the Company's expectations as to future
revenue levels and  to a large  extent are  fixed in the  short-term. If  actual
revenues  do not meet expectations,  the Company's business, financial condition
and results of operations could be materially adversely affected.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    The Company has financed its operations primarily through the sale of equity
securities and, to a lesser extent, through capital lease financings and a  long
term   note  payable.  Through   March  31,  1996,   the  Company  had  received
approximately $54.9 million in net proceeds from equity financings. As of  March
31,  1996, the Company had approximately  $361,000 of cash and cash equivalents.
In addition, the Company had  $3.75 million of restricted marketable  securities
that  currently secure a $3.0  million revolving bank line  of credit. While the
line of credit is in effect, the Company is required to maintain on deposit with
the bank $3.75  million of restricted  marketable securities or  a $3.0  million
certificate  of deposit  as pledged  collateral, restricted  as to  use when the
Company has  outstanding borrowings  under  the agreement.  The line  of  credit
expires  on October 31, 1996. As of March 31, 1996, borrowings under the line of
credit totaled  $250,000.  If  the  Company's  cash  and  restricted  marketable
securities  were to fall  below $3.0 million,  the Company would  be required to
either renegotiate the terms  or cancel the revolving  line of credit. At  March
31,  1996, the Company  also had approximately $1.3  million outstanding under a
long term note. The note contains various provisions including requirements that
the Company maintain  at least $3.0  million in cash  and restricted  marketable
securities  and a  security deposit  in the  amount of  $150,000 payable  to the
lender in  the event  of  a default  on  the note.  If  the Company's  cash  and
restricted  marketable securities were  to fall below  $3.0 million, the Company
would be  required  to deposit  with  the lender  an  additional $200,000  as  a
security deposit.
 
    Net  cash used in operating activities  was approximately $7.2 million, $5.0
million and $2.4 million in fiscal 1994, 1995 and 1996, respectively. Cash  used
in operating activities resulted primarily from net losses. Net cash provided by
investing  activities  in  fiscal  1995 resulted  primarily  from  the  sales of
marketable securities. During fiscal 1996, net cash used in investing activities
reflected the Company's purchases  of property and equipment.  Net cash used  in
financing  activities in  fiscal 1995 reflected  the repayment  of capital lease
obligations, while the net cash provided by financing activities in fiscal  1996
reflected  approximately  $1.7  million in  net  proceeds from  a  note payable,
borrowing under the line of credit and issuances of Common Stock.
 
    The Company intends  to expend  substantial funds for  product research  and
development,   expansion  of  sales  and   marketing  activities,  expansion  of
manufacturing capacity and other working capital and general corporate purposes.
Although  the  Company  believes  that   the  net  proceeds  of  the   Offering,
 
                                       23
<PAGE>
together  with its unrestricted cash  balances, internally generated funds, bank
borrowings under existing lines of credit and proceeds from issuances of  Common
Stock  to Metra Biosystems, will be  sufficient to meet its capital requirements
for the foreseeable future, there can be no assurance that the Company will  not
require  additional  financing.  The  Company's  actual  liquidity  and  capital
requirements will depend upon numerous  additional factors, including the  costs
and  timing of expansion of  manufacturing capacity, the number  and type of new
tests the Company seeks to develop, the  costs and timing of expansion of  sales
and  marketing activities,  the extent to  which the Company's  existing and new
products  gain   market   acceptance,   competing   technological   and   market
developments,  the  progress  of  commercialization  efforts  of  the  Company's
distributors, the costs involved in preparing, filing, prosecuting,  maintaining
and enforcing patent claims and other intellectual property rights, developments
related  to regulatory and third party reimbursement matters and CLIA, and other
factors. In the event that additional financing is needed, the Company may  seek
to  raise additional  funds through  public or  private financing, collaborative
relationships or  other arrangements.  Any additional  equity financing  may  be
dilutive  to  shareholders,  and  debt  financing,  if  available,  may  involve
restrictive  covenants.  Collaborative  arrangements,  if  necessary  to   raise
additional funds, may require the Company to relinquish its rights to certain of
its  technologies, products or marketing territories. The failure of the Company
to raise  capital  when needed  could  have a  material  adverse effect  on  the
Company's  business, financial condition and results of operations. There can be
no assurance that such financing, if required, will be available on satisfactory
terms, if at all.
 
                                       24
<PAGE>
                                    BUSINESS
 
GENERAL
 
    Cholestech develops, manufactures  and markets a  proprietary point of  care
diagnostic  system which measures  specific analytes to  detect various diseases
and disorders  within five  minutes using  a  single drop  of whole  blood.  The
Company  currently markets its L-D-X-  System and a series  of lipid and glucose
panels for preventive  screening and monitoring  applications. In January  1996,
the L-D-X System and the Company's TC, HDL, triglycerides and glucose tests were
granted  waived status  under CLIA, the  first such waiver  granted under CLIA's
newly-developed ease of use, accuracy and precision guidelines. The CLIA  waiver
allows  health care  providers to  use the  L-D-X System  without the additional
operating costs  and  extensive  regulatory requirements  associated  with  CLIA
compliance.   The  Company  believes   that  the  L-D-X-   System  is  the  only
multi-analyte diagnostic  system to  be  classified as  waived under  CLIA.  The
Company  believes  that the  L-D-X  System's CLIA  waived  status, technological
flexibility, ease of  use, accuracy and  low maintenance costs  provide it  with
competitive advantages over other point of care diagnostic systems.
 
MARKET OVERVIEW
 
    Diagnostic  testing of blood for chronic diseases and disorders is typically
performed in independent  clinical laboratories  or hospital-based  laboratories
where  large numbers of blood samples are  processed in batches and test results
are often not returned to physicians in less than 24 hours. The Company believes
that as a  result of  the potential  benefits and  advantages of  point of  care
testing  ,  there exists  an opportunity  to shift  certain types  of diagnositc
testing from clinical laboratories and hospital-based laboratories to the  point
of  care. These potential benefits and  advantages include permitting the health
care practitioner  to provide  immediate  feedback to  the  patient as  well  as
allowing   health  care   practitioners  to  closely   monitor  the  therapeutic
effectiveness of treatment and thereby  improve patient compliance. The  Company
also  believes that point of care testing  could help to reduce overall delivery
costs and could improve patient outcomes by providing diagnosis as close to  the
patient  as  possible,  thereby  eliminating  the  need  for  additional patient
follow-up with  test results  and redundant  and time  consuming procedures  and
processes, reducing paperwork and minimizing the time to medical intervention.
 
    Two of the principal markets in which point of care testing is performed are
the  screening  and  monitoring  markets.  The  screening  market  is  generally
comprised of hospitals,  corporate wellness programs,  health promotion  service
providers,  managed care organizations, community  health centers, public health
programs, fitness centers, the military  and other independent screeners.  These
health  care providers  focus on  identifying patients  who may  be at  risk for
certain diseases or disorders and  directing them to appropriate therapeutic  or
preventive  care programs. The monitoring market is generally comprised of POLs,
lipid clinics, cardiac rehabilitation centers and pharmacies. These health  care
providers  focus  on  disease  management and  perform  testing  to  monitor (i)
patients who are identified  as at risk for  certain diseases, (ii) patients  on
dietary  or drug therapy, and  (iii) patients at risk  of, or who have suffered,
heart attacks or who  are in cardiac rehabilitation.  The Company believes  that
the  number of potential point of care  testing sites is large. For example, the
NCEP and American Heart Association have encouraged cholesterol testing in  such
places  as  worksites,  community health  centers  and a  variety  of preventive
medicine programs  in  order  to  make such  testing  readily  available.  Until
recently,  point of  care testing has  been conducted predominately  in the high
volume screening settings. Point  of care testing in  the monitoring market  has
been  embraced by low volume POLs  only on a limited basis  due to the costs and
administrative burdens associated  with government  regulatory requirements.  In
addition,  technological limitations have  restricted the number  of tests which
can be performed cost effectively at the point of care.
 
    Historically, the Federal Clinical Laboratory Improvement Amendments of 1967
applied only to  clinical and hospital-based  laboratories, and physicians  were
able  to perform any  laboratory testing that they  believed was appropriate for
their patients. The POL market  grew as a result of  the development of easy  to
use  laboratory testing equipment and the  economic incentives for physicians to
perform such
 
                                       25
<PAGE>
testing in their  own offices. In  1988, the regulatory  environment in the  POL
market  changed with the promulgation of  CLIA which applied to all laboratories
including POLs,  which  perform testing  on  human specimens.  Under  CLIA,  all
laboratories   are  required  to   register  with  the   Health  Care  Financing
Administration ("HCFA"), but laboratories  conducting non-waived tests must  pay
higher   registration  fees   and  submit   to  biannual   federal  inspections.
Laboratories conducting  non-waived  tests  are also  required  to  implement  a
comprehensive  quality assurance  program, which  includes a  detailed procedure
manual, enrollment in a proficiency testing program and a requirement to run two
levels of quality control material each day of testing, even if only one patient
sample is run.  Moreover, CLIA regulations  include personnel requirements  that
vary  depending  on  the  complexity  of  tests  performed.  See  "-- Government
Regulation."  Since  POL  testing  is  often  done  in  low  volumes  and   CLIA
requirements  can  significantly  increase  the  costs  of  testing,  performing
non-waived tests  in  a POL  setting  is often  not  cost effective.  When  CLIA
regulations  went  into effect  in 1992,  many  physicians discontinued  all but
waived  testing.  Clinical  and   hospital-based  laboratories,  however,   have
continued  to  perform such  testing  and as  a  result currently  dominate this
market.
 
    SCREENING MARKET
 
    In  the  screening  market,  health  care  providers  perform  high   volume
preventive  risk  factor screening,  particularly  for cholesterol  and glucose.
Although not subject to reimbursement by  Medicare or other third party  payors,
risk  factor screening has proven to be an effective way to decrease the overall
cost of medical care. Hospitals and health departments offer health screening in
local communities. Many corporations (70% of the corporations with greater  than
5,000 employees) offer periodic cholesterol screenings to their employees at the
worksite  as  part of  worksite health  promotion  programs. Of  those companies
providing  cholesterol  screenings,  approximately  30%  also  measure  glucose.
Worksite  health  promotion  is advocated  by  government agencies  such  as the
National Heart, Lung and Blood Institute and the Centers for Disease Control and
Prevention ("CDC"). In addition,  private organizations promote worksite  health
promotion  with a variety  of programs such as  the American Heart Association's
"Heart at Work" Program and  the YMCA's "Corporate Health Enhancement  Program,"
which serves more than 2,000 worksites nationally. The Public Health Service has
set goals for the number of worksites offering cholesterol education and testing
to be increased from 16% in 1983 to 50% by the year 2000. Due to the high volume
of  testing  performed by  health care  providers in  the screening  market, the
adoption of CLIA and its resulting cost increases and administrative burdens did
not have a significant negative impact on testing in the screening market. Since
CLIA went into effect in 1992, the  Company has focused its sales and  marketing
efforts  on the distribution  of its products  into the various  segments of the
screening market.
 
    MONITORING MARKET
 
    Since the Company  received notice  from the CDC  in January  1996 that  the
L-D-X System and the TC, HDL, triglycerides and glucose tests in any combination
have  been classified as waived  under CLIA, the Company  has expanded its sales
and marketing focus to include the monitoring market, in particular the POL  and
pharmacy segments. There are currently 54,000 POLs which perform different types
of  diagnostic tests. The Company currently offers four of the eight most common
blood chemistry  tests  performed  at  POLs, with  two  additional  tests  under
development.  In  addition, there  are currently  68,000 pharmacies  which could
potentially offer point  of care testing.  The Company believes  that long  term
success in the pharmacy market will be dependent upon the development of patient
monitoring  programs developed by  pharmacies and implemented  with managed care
practitioners and physicians on a local basis.
 
STRATEGY
 
    The Company's business strategy includes the following elements:
 
    - LEVERAGE CORE  TECHNOLOGIES  TO  ENHANCE PRODUCT  OFFERINGS.  The  Company
      intends  to leverage the technological flexibility  of the L-D-X System by
      developing new test cassettes which utilize the existing L-D-X Analyzer in
      order to  capitalize  on  the Company's  installed  based  of  instruments
 
                                       26
<PAGE>
      as  well as to make the L-D-X System more attractive to new customers. The
      Company is  currently in  various stages  of development  of new  products
      which  utilize  biological markers  for  screening and  monitoring certain
      common diseases, such as metabolic  bone diseases and disorders,  prostate
      cancer  and diabetes. In addition, the Company is developing new tests for
      blood urea nitrogen, uric acid and creatinine for renal function  analysis
      and liver enzymes for hepatic damage.
 
    - INCREASE  PENETRATION  OF  SCREENING  MARKET  AND  EXPAND  INTO MONITORING
      MARKET. The Company believes that the  CLIA waived status of its  products
      will  increase the number of potential  customers in the screening market,
      and will enable the Company to  access the monitoring market. The  Company
      is  currently  developing  new  products to  make  its  product  line more
      attractive to the  POL market as  well as to  expand its screening  market
      offerings.
 
    - EXPAND  DISTRIBUTION CHANNELS. The  Company intends to  augment its direct
      sales and marketing efforts by continuing to establish relationships  with
      selected  third party distributors to strategically access target markets.
      The Company has recently entered  into a distribution agreement with  PSS,
      one  of the largest medical products distributors in the United States, to
      sell the L-D-X System to the POL market.
 
    - ESTABLISH STRATEGIC RELATIONSHIPS. The Company has established and intends
      to continue to establish strategic  relationships to develop new  products
      and   to  expand  its  customer  base.  The  Company  believes  that  such
      relationships will enable it to take advantage of the financial resources,
      technological capabilities and market presence of its partners to  enhance
      its  competitive position in  the screening market  and expanding into the
      monitoring market. In  May 1996  the Company entered  into a  development,
      marketing  and  licensing agreement  with Metra  Biosystems to  develop an
      immunoassay test cassette incorporating Metra Biosystems' bone  resorption
      technology  to  be  used  with  the  L-D-X  System.  The  Company  is also
      participating  in  a  pilot  program  with  the  American   Pharmaceutical
      Association  funded by Merck & Co. ("Merck") to demonstrate the ability of
      pharmacists to improve  patient outcomes  with drug  therapy and  behavior
      modification.
 
TECHNOLOGY
 
    The  L-D-X  System is  a  self-contained, easy  to  use package  of products
consisting of  a  versatile,  telephone-sized electronic  analyzer,  a  line  of
disposable  test  cassettes,  and  accessories that  enable  a  user  to perform
combinations of blood tests  in five minutes or  less. Although no special  user
training  is needed  and the test  sample does  not need to  be pre-treated, the
Cholestech L-D-X System produces  results that are  comparable to the  precision
and   accuracy  typically  seen   in  larger,  more   expensive  bench  top  and
laboratory-based analyzers. Correlation studies of the L-D-X System and clinical
laboratory analyzers have shown that the L-D-X System meets NCEP guidelines  for
precision  and accuracy. In addition, the ease of use and precision and accuracy
of the  L-D-X System  were factors  necessary for  the L-D-X  System to  receive
waived  status under CLIA. The Company believes that it is the only manufacturer
with a CLIA waived multi-analyte diagnostic system.
 
    The Company believes the  L-D-X System provides  the following benefits  and
advantages:
 
    - FLEXIBILITY  OF L-D-X SYSTEM. The design  of the L-D-X System incorporates
      as much of the system's technology as possible into the test cassettes and
      maintains the L-D-X Analyzer  as a flexible measuring  device that can  be
      adapted  as new  tests and other  product upgrades are  introduced. As new
      tests  are   marketed,  encoding   on  the   cassette's  magnetic   stripe
      communicates  the product  change to the  L-D-X Analyzer  and provides the
      L-D-X Analyzer  the information  needed to  measure and  display the  test
      results. Changes that cannot be captured on the cassette's magnetic stripe
      can  be accomplished by software changes in the L-D-X Analyzer's removable
 
                                       27
<PAGE>
      read only memory ("ROM") pack. This flexible design is intended to  permit
      the  installed base  of users to  incorporate new tests  and other product
      upgrades to the L-D-X System without having to purchase a new analyzer.
 
    - COST EFFECTIVENESS.  The  Company believes  that  point of  care  specimen
      analysis  made possible by  the L-D-X System may  provide savings to third
      party payors and physicians. Point of care testing allows the health  care
      practitioner   to  provide  immediate  results  to  the  patient,  thereby
      increasing the possibility for  improved patient outcomes and  eliminating
      the  requirement  that  the patient  return  to receive  test  results. In
      addition, the Company believes that the L-D-X System's waived status under
      CLIA,  together  with  prevailing  third  party  reimbursement  rates  and
      recommended  fees,  may  provide  a financial  incentive  for  health care
      providers to test patients at the point of care and capture revenue rather
      than forwarding it to the clinical laboratory.
 
    - IMMEDIATE RESULTS. The L-D-X System provides the health care  practitioner
      with  results in approximately five  minutes, allowing for immediate point
      of care risk factor analysis,  diagnosis and monitoring. The immediacy  of
      the  test results  allows the practitioner  to begin  treatment during the
      same visit, perform additional  tests if needed  or select an  alternative
      treatment.  The L-D-X System's  ability to provide  immediate test results
      also improves the usefulness of  screening applications, such as  worksite
      testing programs.
 
    - SIMULTANEOUS  PERFORMANCE  OF MULTIPLE  TESTS.  With the  L-D-X  System, a
      single cassette can perform up to four tests simultaneously, enabling  the
      Company  to develop test cassettes that meet specific market needs. In the
      monitoring market,  the  performance  of  multiple  tests  with  a  single
      cassette may also result in more reimbursement revenue for the physician.
 
    - EASE  OF USE.  The L-D-X System  requires no special  medical or chemistry
      training to operate and obtain test results. In addition, the L-D-X System
      eliminates the need to pre-treat the testing sample.
 
    - FEWER OPPORTUNITIES FOR  ERROR. The  L-D-X System eliminates  many of  the
      steps   traditionally   involved  in   blood  testing,   including  sample
      transportation, preparation  and storage,  and interpretation  of  analyte
      color  reactions,  thereby  reducing  opportunities  for  human  error and
      preserving the integrity of the sample.
 
    L-D-X ANALYZER
 
    The L-D-X Analyzer is a  four-channel, reflectance photometer that  measures
the  amount of  light reflected  from the  reaction surfaces  and incorporates a
microprocessor with  on board  software. The  L-D-X Analyzer  contains an  entry
drawer  for insertion of the  cassette, three buttons for  user activation and a
liquid crystal display to present the test measurements. The L-D-X Analyzer  can
also  transmit results to a printer or laboratory management computer system for
data handling  and record  keeping.  The L-D-X  Analyzer includes  cardiac  risk
assessment  software that allows the health care practitioner to perform cardiac
risk assessment  using TC  and  HDL test  results  and information  about  other
cardiac  risk  factors  the  health  care  practitioner  enters  into  the L-D-X
Analyzer.
 
    To run a  test, the health  care provider  presses the "run"  button on  the
L-D-X  Analyzer to open the  cassette drawer, applies the  sample of whole blood
directly to  the test  cassette's sample  well, inserts  the cassette  onto  the
drawer and presses the run button again. All further steps are done by the L-D-X
Analyzer.  Utilizing the information and  instructions encoded on the cassette's
magnetic stripe,  the  L-D-X Analyzer's  on  board microprocessor  controls  the
reaction conditions, controls the optical measurements of analyte concentrations
on  the cassette's reaction pads, executes the required calculations and, within
approximately five  minutes, displays  the quantitative  results on  the  liquid
crystal display.
 
    The  ROM software  that instructs  and controls  the operation  of the L-D-X
Analyzer's on board microprocessor is contained in a removable ROM pack  mounted
in  an access well on  the bottom of the L-D-X  Analyzer. The Company intends to
upgrade the software in  its ROM pack  as the Company  develops new products.  A
user  can  then  easily remove  the  ROM pack  and  replace  it with  a  new ROM
 
                                       28
<PAGE>
pack containing upgraded software.  To date, the Company  has made available  to
existing  users  a new  ROM pack,  without charge,  containing the  cardiac risk
assessment software described  above, as  well as  a new  ROM pack,  for a  fee,
reflecting certain changes required to receive the CLIA waiver.
 
    DISPOSABLE TEST CASSETTES
 
    The  focal  point  of  the  L-D-X System  is  the  line  of  disposable test
cassettes,  which  incorporate  patented  technology,  including  a  method  for
distributing   precisely  measured   plasma  to   multiple  reaction   pads  for
simultaneous testing along with  the technology to  instruct the L-D-X  Analyzer
how to perform the tests and all related calculations.
 
    Each  cassette consists of three parts: a main body that contains the sample
well into which the blood  sample is dispensed, a  reaction bar where plasma  is
transferred  for analysis, and a magnetic  stripe encoded with test instructions
and lot  specific calibration  information for  the various  chemistries on  the
reaction pads. Capillary action draws a drop of whole blood through a separation
medium  within a cassette,  stopping the cellular components  of the blood while
transferring a small volume of plasma to the cassette's reaction pads. When  the
plasma contacts the reaction pads, the dry chemistry on the reaction pads reacts
with  the  analyte(s) in  the  plasma producing  color.  The intensity  of color
developed is proportional to the concentration of the analyte(s) in the  plasma.
The magnetic stripe contains information needed by the L-D-X Analyzer to convert
the  reflected  color  reading  into  a  concentration  level  for  the accurate
measurement of analytes being tested. This feature frees the user from having to
interpret any color reaction, relate a reading to a separate chart or input  any
calibration information.
 
    For  certain future tests, the Company will be required to modify the design
of the existing dry chemistry  cassette. For example, the Company's  immunoassay
tests  currently under  development require the  use of antibodies  bound to the
reaction membrane  and a  wash step  which removes  bound reactants  that  would
interfere  with the test. The new immunoassay cassette under development has the
same external dimensions as the currently available dry chemistry cassette,  but
will  require the  Company to  develop new technologies  that would  allow it to
perform an  immunoassay test.  The  Company believes  that, if  the  immunoassay
cassette  is  successfully  developed,  the  L-D-X  Analyzer  will  be  the only
instrument capable of performing both dry chemistry and immunoassay-based  tests
on a single instrument. See "-- Products -- Products Under Development."
 
                                       29
<PAGE>
PRODUCTS
 
    The  Company's current products  include the L-D-X Analyzer  and a series of
lipid and glucose test  cassettes for the screening  and monitoring markets.  In
addition,  the Company is in  the process of developing  new tests to expand its
product menu, including immunoassay-based  test cassettes to provide  preventive
monitoring assays for the detection of metabolic bone diseases and disorders and
prostate  cancer. The following table  summarizes the Company's current cassette
products and products under development:
 
<TABLE>
<CAPTION>
      L-D-X TEST               APPLICATION         TEST TYPE          STATUS (1)
- -----------------------  -----------------------  ------------  -----------------------
CURRENT PRODUCTS
<S>                      <C>                      <C>           <C>
TC                            Cardiac Risk            Dry       Marketed; FDA cleared;
                                                   Chemistry          CLIA waived
TC and HDL                    Cardiac Risk            Dry       Marketed; FDA cleared;
                                                   Chemistry          CLIA waived
Lipid Profile (TC/HDL/        Cardiac Risk            Dry       Marketed; FDA cleared;
 Triglycerides)                                    Chemistry          CLIA waived
TC and Glucose           Cardiac & Diabetes Risk      Dry       Marketed; FDA cleared;
                                                   Chemistry          CLIA waived
TC/HDL/Glucose           Cardiac & Diabetes Risk      Dry       Marketed; FDA cleared;
                                                   Chemistry          CLIA waived
Lipid Profile plus       Cardiac & Diabetes Risk      Dry       Marketed; FDA cleared;
 Glucose                                           Chemistry          CLIA waived
 
PRODUCTS UNDER
 DEVELOPMENT
Bone Markers                  Osteoporosis        Immunoassay       Prototype Stage
Uric Acid                    Renal Function           Dry         Feasibility Studies
                                                   Chemistry
Blood Urea Nitrogen          Renal Function           Dry         Feasibility Studies
                                                   Chemistry
Creatinine                   Renal Function           Dry         Feasibility Studies
                                                   Chemistry
Prostate Specific           Prostate Disease      Immunoassay     Feasibility Studies
 Antigen
Glycated Hemoglobin             Diabetes            Specific      Feasibility Studies
                                                    Binding
</TABLE>
 
(1) "Marketed" means that commercial sales  of the product have commenced.  "FDA
    cleared"  means that the product has received 510(k) clearance from the FDA.
    "CLIA waived" means  that the product  has been classified  as waived  under
    CLIA  by the CDC. "Feasibility studies"  means that a theoretical design for
    the product has been developed and the test chemistry is being evaluated  in
    the  laboratory.  "Prototype  stage"  means  cassette  shelf-life  is  being
    evaluated, pilot manufacturing  equipment is  being developed,  and the  new
    test is being evaluated in-house against samples designed to mimic the range
    of real patient samples.
 
     CURRENT PRODUCTS
 
    The  Company's current  products are designed  to measure  and monitor blood
cholesterol and related lipids  and glucose. Lipids travel  in the blood  within
water-soluble  particles called lipoproteins. These  lipid carriers include VLDL
(very-low-density lipoproteins), LDL  (low-density lipoproteins)  and HDL  (high
density  lipoproteins). VLDL, a major carrier of triglycerides in the blood, and
LDL, the major  carrier of cholesterol,  have been shown  to be associated  with
deposits   on  the   arterial  wall,   which  are   sometimes  referred   to  as
atherosclerotic plaque. The accumulation of this plaque leads to a narrowing  of
the arteries and increases the likelihood of coronary heart disease, the leading
cause of death in the United States. HDL particles, which circulate in the blood
and  can  pick  up cholesterol  from  arteries and  carry  it to  the  liver for
elimination from  the  body, counterbalance  this  mechanism. HDL  is  sometimes
called  "good cholesterol" because of this function. The development of coronary
heart disease has been associated with three lipoprotein abnormalities: (i) high
levels of LDL; (ii) high levels of VLDL; and (iii) low levels of HDL.
 
                                       30
<PAGE>
    Recognizing the  relationship between  diabetes and  dyslipidemia  (abnormal
lipid  levels),  Cholestech  developed  a glucose  test  for  the  L-D-X System.
Diabetes is a complex disorder of  carbohydrate, fat and protein metabolism.  It
is  manifested by a relative or absolute deficiency in insulin, the hormone that
facilitates and  controls  the  use of  glucose  by  the body.  Because  of  the
deficiency  of insulin, diabetic patients have an impaired tolerance to glucose,
which leads to a number of short term and long term complications, such as nerve
damage, kidney disease and retinal damage.
 
    The Company's  L-D-X  System  includes the  L-D-X  Analyzer  which  measures
analyte  concentrations  on  the  test cassette  and  displays  the quantitative
results. The L-D-X Analyzer currently has a list price of $1,795. A  description
of the Company's test cassettes is provided below.
 
    TC.    A stand  alone  test for  measuring  total cholesterol.  The  TC test
currently has a list price of $2.95.
 
    TC AND HDL PANEL.  The total cholesterol and HDL cholesterol panel  provides
results  for TC  and HDL  and calculates the  ratio of  TC to  HDL, a recognized
measure of lipid-induced cardiac risk. The Company believes that the TC and  HDL
Panel  is the only  currently available point  of care test  which, using only a
single drop  of  whole  blood  from a  simple  fingerstick,  addresses  the  NIH
guidelines  regarding  the  evaluation  of coronary  heart  disease  through the
testing of not only TC, but also  the important HDL component. As a result,  the
Company  believes  the TC  and  HDL Panel  is  particularly useful  in corporate
wellness and initial screening applications. The TC and HDL Panel currently  has
a list price of $7.50.
 
    LIPID  PROFILE.  The Company offers  a Lipid Profile which directly measures
TC, HDL and triglycerides. In addition  to providing direct results for TC,  HDL
and  triglycerides, the  Lipid Profile calculates  estimated values  for LDL and
VLDL and calculates the  ratio of TC  to HDL. The  Lipid Profile thus  performs,
using  a  small sample  of  whole blood  from  a simple  fingerstick,  each test
identified by  the NIH  guidelines as  important in  the diagnosis  and  ongoing
monitoring  of individuals who  have high TC  levels or who  exhibit two or more
other coronary heart  disease risk factors.  The Lipid Profile  also allows  the
health  care practitioner  to follow the  NIH guidelines to  perform three lipid
profiles, each one week apart, prior to initiating drug or dietary therapy.  The
Lipid Profile currently has a list price of $9.95.
 
    TC   AND  GLUCOSE  PANEL,  TC/HDL/GLUCOSE   PANEL  AND  LIPID  PROFILE  PLUS
GLUCOSE.  These panels  address the need for  screening and monitoring  patients
with  demonstrated or incipient diabetes mellitus  and individuals who may be at
risk of cardiovascular disease  and individuals who may  not be aware that  they
are  diabetic. These test combinations are potentially desirable because glucose
and TC tests are frequently conducted  at occupational health sites. The TC  and
Glucose  Panel, the TC/HDL/Glucose Panel and the Lipid Profile plus Glucose have
a list price of $3.95, $8.50 and $10.95, respectively.
 
    MARKETS.   In response  to conclusive  evidence relating  high TC  to  heart
disease,  the NIH in 1985  launched the NCEP, a  nationwide effort to reduce the
prevalence of high blood  cholesterol. In 1988, the  NCEP issued guidelines  for
the  testing of all adults over 20 years  of age for high blood cholesterol, and
more extensive lipid monitoring and treatment for those found to be in high risk
categories. Testing guidelines  were subsequently expanded  to include  children
over  the age of two with a family history of high blood cholesterol or coronary
heart  disease  and  to  include  in  certain  circumstances  a  lipid  profile,
consisting  of  TC, HDL,  LDL and  triglycerides. Since  the NCEP  initiated its
recommendations,  the  market  for  cholesterol   and  other  lipid  tests   has
experienced  significant growth.  NCEP data indicate  that more than  50% of the
adult population  in the  United States  has  high or  borderline high  TC.  The
Company  estimates that more than 200 million  lipid tests were performed in the
United States in 1992.
 
    It is estimated that Type II diabetes, which involves insulin deficiency  or
insulin  resistance, afflicts more than 15 million persons in the United States,
but only half of those with Type II diabetes have been identified. Screening for
these patients who  have non-symptomatic diabetes  is important, because  proper
treatment will minimize the long term complications of the disease.
 
                                       31
<PAGE>
    PRODUCTS UNDER DEVELOPMENT
 
    The  Company's strategy is to use the technological flexibility of the L-D-X
System to develop new
cassettes that address disease states  and testing markets the Company  believes
provide  attractive commercial opportunities. The Company is in the early stages
of developing new cassettes that would expand its product line in the  screening
market  and would better position its product  line for the POL market. To date,
the Company has been engaged primarily in conducting research and development to
determine the feasibility of performing these new tests on the L-D-X System. The
Company will initially focus its available resources on the development of  uric
acid,  blood urea nitrogen,  creatinine and liver  enzyme tests, as  well as the
immunoassay-based test  to  detect  and  monitor  metabolic  bone  diseases  and
disorders being developed in conjunction with Metra Biosystems. The Company will
undertake  the development of additional tests  depending on the progress of its
existing development  efforts  and  its available  resources.  To  complete  its
product development programs, particularly with respect to the immunoassays, the
Company  may  be  required  to  develop  new  core  technologies,  processes and
production equipment. In addition,  the Company may also  be required to  retain
additional  scientific,  engineering and  manufacturing staff.  There can  be no
assurance that the  Company will be  successful in developing  any of the  tests
described below, or even if successfully developed, that such tests will receive
regulatory  clearance,  be capable  of  being cost  effectively  manufactured in
sufficient quantities,  on a  timely  basis and  in compliance  with  regulatory
guidelines,  or  be successfully  marketed. The  Company  intends to  design and
develop most of these products so as to be eligible for FDA 510(k) clearance and
waivers under  CLIA, although  there  can be  no  assurance that  the  Company's
products  under development  will obtain such  clearances or  waivers. See "Risk
Factors -- Government Regulation."
 
    Products currently being developed by the Company are described below.
 
    METABOLIC BONE DISEASES AND DISORDERS.  Osteoporosis is the most  widespread
form  of bone disease characterized by a general loss of bone density. This loss
of bone density can  lead to a  weakening of the bone,  thereby making the  bone
more  prone to fractures. Biological markers  of bone metabolism are secreted in
urine, and it  has been  shown that  the level  of secretion  correlates to  the
amount of bone loss. The measured levels of these markers has also been shown to
be  responsive to osteoporosis therapies  such as hormone replacement. According
to the National Osteoporosis Foundation,  this disease afflicts over 25  million
Americans  and  over  200  million  people  worldwide.  In  the  United  States,
approximately 1.5 million  osteoporosis related fractures  occur each year.  For
Caucasian women, it is estimated that the risk of hip fractures approximates the
combined  risks of  breast, endometrial  and ovarian  cancers. The  World Health
Organization estimates that the  cost of osteoporosis  related fractures in  the
United States exceeds $7 billion annually.
 
    The  Company has entered into an  agreement with Metra Biosystems to develop
and  market  Metra  Biosystems'  Pyrilinks-D  and  other  related  bone   marker
technologies  on the L-D-X System. The Company has successfully demonstrated the
feasibility of meeting the initial  specifications for the Company's  technology
for  this urine-based immunoassay  on the L-D-X  System and is  in the prototype
stage of development.
 
    RENAL FUNCTION TESTS.  The Company  is developing a menu expansion of  tests
to  include tests  for uric  acid, blood  urea nitrogen  and creatinine  for the
physician's office. The  Company believes that  these tests are  among the  most
commonly ordered tests in physician offices. Uric acid elevations occur in renal
diseases as well as gout, and low uric acid levels are sometimes associated with
diabetes  and  severe liver  disease. Blood  urea  nitrogen elevations  occur in
chronic renal disease as well as urinary tract obstruction. Blood urea  nitrogen
is  useful to  monitor hemodialysis  and other  therapies. Creatinine  is also a
measure of renal function and  is used in combination  with uric acid and  blood
urea nitrogen tests. In addition, creatinine is used as a measure of renal blood
flow  which  may  have  become  reduced  due  to  congestive  heart  failure  or
dehydration.  Low  levels  of  creatinine  may  result  from  decreased  hepatic
production  in  advanced  liver  disease. The  Company  is  currently conducting
feasibility studies for each of these tests.
 
    PROSTATE SPECIFIC ANTIGEN (PSA).  The American Cancer Society estimates that
in 1996, 317,000 Americans will be  diagnosed with prostate cancer and  predicts
that deaths from prostate cancer in the
 
                                       32
<PAGE>
United  States will  reach over  41,000 making  it the  second leading  cause of
cancer related deaths. The  American Cancer Society recommends  that men 50  and
older  receive a  PSA blood test  annually. By making  early detection possible,
treatment can begin  when there is  a higher likelihood  of success, leading  to
better  survival  rates  from  the disease.  The  Company  has  demonstrated the
feasibility of  measuring  PSA from  a  single drop  of  whole blood  using  the
Company's  technology. The  Company expects  that the  PSA test  may require PMA
approval from the FDA.
 
    GLYCATED HEMOGLOBIN.  Glycated hemoglobin measurement is used by  physicians
to  assess a  diabetic's long term  compliance with prescribed  diet and insulin
usage. This test  measures the  percent of  the patient's  hemoglobin which  has
become coupled to glucose. A relatively high percentage of hemoglobin to glucose
indicates poor patient compliance, which can lead to severe health problems. The
American   Diabetes   Association  ("ADA")   recommends  at   least  semi-annual
measurement for all diabetic patients. It  is estimated that there are seven  to
eight million diagnosed diabetics in the United States.
 
    The  Company has been  notified by the  U.S. Department of  Health and Human
Services that it will  receive a "Small Business  Innovative Research" grant  of
$100,000  to  further develop  this test  on  the L-D-X  System. The  Company is
currently evaluating the feasibility of a test to detect glycated hemoglobin  on
the L-D-X System.
 
    OTHER PRODUCTS UNDER DEVELOPMENT.  The Company currently sells two cassettes
which can calculate LDL cholesterol levels from the combined readings of TC, HDL
and  triglycerides. LDL cholesterol is  the fraction of TC  which leads to heart
disease and is referred to as "bad" cholesterol. There is now available a direct
version of the LDL test,  and the Company is  considering adapting this form  of
the  test  to the  L-D-X  System. The  advantage of  this  direct test  over the
calculated version of the test is that  it does not require the patient to  fast
before testing. However, since lipid management requires the physician to assess
a  patient treatment on  both "good" and "bad"  cholesterol, the disadvantage of
the stand alone direct  LDL test is  the lack of the  patient's HDL values.  The
Company  believes  that the  L-D-X  System may  overcome  this problem  with its
ability to run multiple tests simultaneously on the system.
 
    The Company is currently evaluating the feasibility of a test to detect  the
levels  of liver enzymes in  whole blood. Liver enzymes  are measures of hepatic
damage which may be caused by  a number of diseases and/or chemical  toxicities.
The  ability to monitor the levels of liver enzymes is important because a large
number of drugs, including cholesterol  lowering drugs, can cause liver  damage.
The  Company  believes  that a  liver  enzyme  test would  complement  its lipid
diagnostic products.
 
    Lp(a) is a lipoprotein which is a component of LDL. It has been  established
in  the scientific literature  that Lp(a) is a  risk factor for atherosclerosis,
and it is believed that Lp(a) may  be the component of LDL which is  responsible
for the risk associated with LDL. The Company believes that a test for Lp(a) may
emerge  as the  dominate test for  cardiac risk  in the future.  The Company has
licensed the rights  to a new  technology to measure  Lp(a). This technology  is
currently being evaluated by the Company and a number of collaborators.
 
    There  can  be  no assurance  that  the  Company will  be  able  to complete
successful development of any of  these future products. Furthermore, there  can
be no assurance that even if these products and/or any other future products are
successfully  developed, the  Company will be  able to  successfully receive FDA
clearance or  approval or  CLIA  waivers on  a  timely basis,  manufacture  such
products  on a cost effective basis and in compliance with applicable regulatory
standards,  or  successfully  market  these  products.  See  "Risk  Factors   --
Dependence on Development and Introduction of New Products."
 
SALES AND MARKETING
 
    To  date,  the  Company  has  focused its  sales  and  marketing  efforts on
hospitals,  managed  care  organizations,   large  physician  group   practices,
corporate  wellness programs, community health centers, health promotion service
providers and  other independent  screeners in  the screening  market. With  the
 
                                       33
<PAGE>
recent  CLIA waiver of its  existing product line, the  Company believes that it
has a  significant opportunity  to  access the  monitoring market.  The  Company
utilizes a combination of a direct sales force and regional distributors to sell
into  the screening market and is  developing a national distribution network to
access the monitoring market.
 
    The Company  provides continuing  customer support,  including an  automated
order  entry system, and  technical support whenever  needed to promote customer
satisfaction. A U.S.  toll-free number  gives the customer  immediate access  to
Cholestech's  in-house customer  service and  technical support  group. Customer
service  representatives   also  assist   customers  to   order  cassettes   and
accessories.  The Company  maintains an  in-house instrument  service capability
that provides repairs  to instruments either  under warranty or  on a parts  and
labor basis.
 
    SCREENING MARKET
 
    The Company's distribution strategy for the screening market is to sell both
directly  to high  volume customers and  to selected  regional distributors. The
Company believes  that  its products  provide  a  cost effective,  easy  to  use
alternative  for preventive health care programs that are focused on identifying
high risk  individuals with  possible cardiovascular  disease and  diabetes  and
enrolling  them into appropriate  disease intervention programs  to reduce their
overall health risk.
 
    The Company sells directly through a  field sales group which includes  nine
regional   sales  managers.   In  addition,   the  Company   has  established  a
telemarketing effort to support large volume customers and utilizes direct  mail
campaigns to increase demand for its products. The Company also has entered into
agreements  with nine  regional distributors  that augment  the Company's direct
sales efforts.
 
    The Company's international distribution  strategy for the screening  market
is  designed  to opportunistically  penetrate  targeted geographical  markets by
selling directly  to individual  distributors in  those areas.  The Company  has
entered  into  agreements with  several foreign  distributors to  distribute the
L-D-X System primarily in  Europe and Latin America  and is negotiating  similar
agreements with other distributors in South and Central America.
 
    MONITORING MARKET
 
    The  Company's sales  and marketing  efforts in  the monitoring  market will
initially be focused on the POL and pharmacy segments. To efficiently access the
54,000 POLs,  the Company  is  negotiating with  several national  and  regional
distributors.  As of April  1, 1996, the  Company entered into  a national, non-
exclusive  distribution  agreement  with   PSS,  a  national  medical   products
distributor with more than 700 sales professionals who focus on the POL market.
 
    The pharmacy market consists of 68,000 pharmacies which may provide point of
care testing. The Company believes that marketing success in the pharmacy market
will   be  dependent  upon  the   development  of  patient  monitoring  programs
implemented in conjunction with managed care providers and physicians on a local
basis. In  January  1996,  the  American  Pharmaceutical  Association  announced
Project  IMPACT (IMprove Persistence And  Compliance to Therapy). Project IMPACT
is being  funded  by Merck,  and  its goal  is  to demonstrate  the  ability  of
pharmacists   to  enhance  patient  outcomes  with  drug  therapy  and  behavior
modification. The pilot program enlarges the  pharmacist's role to one in  which
the  pharmacist monitors  therapeutic effectiveness of  medications and provides
counseling services  to  the  patient. Utilizing  pharmacists  to  provide  such
services  may result in both direct and indirect cost savings to the patient and
the patient's insurer. The  Company is participating  in Project IMPACT  through
the  use  of  its  L-D-X  System  to  monitor  patients  in  this pharmacy-based
cholesterol management project. The  Company intends to  utilize the program  to
evaluate  the potential market  for the L-D-X  System among pharmacists. Project
IMPACT will monitor approximately 900 patients at 32 community-based  pharmacies
across the country for a period of two years.
 
    There  can be no  assurance that the  Company will be  able to penetrate the
monitoring market, including the  POL or pharmacy  segments, or that  physicians
will  use the L-D-X System instead of  clinical laboratory services for the same
tests. See  "Risk Factors  --  Uncertainty of  Market  Acceptance of  the  L-D-X
System."
 
                                       34
<PAGE>
STRATEGIC RELATIONSHIPS
 
    The  Company's  strategy  includes establishing  strategic  relationships to
develop new products,  expand its customer  base, and provide  the Company  with
technological, clinical, marketing, financial and other key resources.
 
    In May 1996, the Company entered into a development, marketing and licensing
agreement  with  Metra  Biosystems  to  develop  an  immunoassay  test  cassette
incorporating Metra Biosystems' bone resorption  technology to be used with  the
L-D-X  System.  Pursuant to  the  agreement, Metra  Biosystems  purchased 39,526
shares of the Company's Common Stock for an aggregate purchase price of $250,000
($6.325 per share) and is obligated to purchase $750,000 of additional shares of
Common Stock upon  the completion of  specified milestones by  the Company.  The
Company  has  granted Metra  Biosystems registration  rights in  connection with
Metra Biosystems' purchase of  the Company's Common  Stock. See "Description  of
Capital Stock -- Registration Rights."
 
    In  connection with the development of  the immunoassay test cassette, Metra
Biosystems granted Cholestech a  non-exclusive, royalty-bearing license to  use,
make, sell, offer to sell, import or distribute the resulting cassette to assess
bone resorption, a gauge of the effectiveness of treatments of certain metabolic
diseases  and  disorders  and  certain  future  products  worldwide  (the "Metra
License"). The  Company shall  pay royalties  to Metra  Biosystems on  the  bone
resorption product and on products that stem from work done in the course of the
collaboration  but  do  not  incorporate any  of  Metra  Biosystems' proprietary
technology. The  parties will  negotiate royalties  on future  Metra  Biosystems
products  as  appropriate.  Under the  agreement,  the Company  will  market the
immunoassay test  through  its  existing distribution  channels  in  the  United
States.  The  Company and  Metra  Biosystems will  work  together to  market and
distribute the tests internationally.
 
    There can be no assurance that the Company will be successful in  developing
a  bone resorption  test or  any other product  under this  agreement, that this
agreement will not expire prior  to its term, or that  even if any products  are
developed  that they will be successfully marketed. The Company expects to enter
into additional strategic agreements in the future to develop, commercialize and
sell its current and future products. There can be no assurance that the Company
will be able  to negotiate  acceptable agreements in  the future,  or that  such
relationships  will be successful.  In addition, there can  be no assurance that
the  Company's  strategic  partners   will  not  pursue  alternative   competing
technologies  or products.  See "Risk  Factors --  Limited Sales,  Marketing and
Distribution Experiences; Dependence on Third Party Distributors."
 
                                       35
<PAGE>
MANUFACTURING
 
    The  Company manufactures,  tests, performs quality  assurance, packages and
ships  products  at  its  30,000  square  foot  facility  located  in   Hayward,
California. The Company maintains control of those portions of the manufacturing
process  that it believes are complex and provide important barriers to entry by
competitors. The production  processes employed  by the  Company to  manufacture
cassettes  differ significantly  from those employed  in the  manufacture of the
analyzer.
 
    MANUFACTURE OF CASSETTES
 
    The Company  purchases chemicals,  membranes and  other raw  materials  from
third  party  suppliers  and  converts these  raw  materials,  using proprietary
processes, into cassettes.  The Company believes  its proprietary processes  and
custom-designed equipment are important components of its cassette manufacturing
operations. The Company has developed core manufacturing technologies, processes
and  production machinery, including  (i) membrane lamination  and welding; (ii)
discrete membrane  impregnation; (iii)  on-line calibration;  and (iv)  software
control of the manufacturing process. The Company is currently in the process of
completing  validation of the second cassette manufacturing line and expects the
line to  be fully  operational in  mid-1996. In  the event  that cassette  sales
volume  significantly increases,  the Company would  be required  to construct a
third cassette manufacturing line. There can be no assurance that such expansion
of cassette manufacturing  capacity can  be completed  in a  timely fashion,  if
ever,  and the  failure to  increase cassette  manufacturing capacity  on a cost
effective and timely basis would have a material adverse effect on the Company's
business, financial condition and  results of operations.  See "Risk Factors  --
Risks Associated with Cassette Manufacturing."
 
    Cassette   manufacturing  yield   (defined  as   the  successful  percentage
conversion of raw materials, through the manufacturing process, into  functional
cassettes) is an important measure of the quality and robustness of the cassette
manufacturing  process.  Manufacturing of  the cassettes  is highly  complex and
sensitive to a wide variety of  factors, including variations and impurities  in
the  raw materials, performance of the  manufacturing equipment and the level of
contaminants in  the  manufacturing  environment.  Incoming  inspection  of  raw
materials,  in-process controls,  improved manufacturing  equipment performance,
and better operator proficiency and  training all contribute to improvements  in
yield.  Continuous  improvement  of  process  factors  are  key  determinants of
manufacturing output and efficiency, product quality and reliability and overall
profitability. Although the  Company believes  that it  has acceptable  cassette
yields  and should be able to maintain the current cassette yield in the future,
there can be no assurance that such  improvement will be maintained or that  the
Company  will not suffer  future periodic cassette  yield problems in connection
with new or existing products. Failure  to maintain the improvements in  process
yield  or failure to  obtain acceptable yields  on future products  could have a
material adverse effect on the Company's business.
 
    MANUFACTURE OF L-D-X ANALYZER
 
    The analyzer employs a variety  of subassemblies and components designed  or
specified by the Company, including an optical element, microprocessors, circuit
boards,  a  liquid  crystal  display  and  other  electrical  components.  These
components and subassemblies are manufactured by a variety of third parties  and
are  shipped to the Company for final assembly. The Company's manufacture of the
analyzer consists  primarily of  assembly,  testing, inspection  and  packaging.
Testing  consists of  a burn-in period,  functional tests  and integrated system
testing using specially  produced test  cassettes. The Company  believes it  can
expand its current analyzer manufacturing capacity at minimal cost.
 
    RAW MATERIALS; QUALITY ASSURANCE
 
    Outside  vendors provide  Cholestech with subassemblies,  components and raw
materials. These materials are purchased, inspected and tested by the  Company's
quality  control personnel. The Company's quality control personnel also perform
finished goods quality  control and  inspection and  maintain documentation  for
compliance with current good manufacturing practices (cGMP) and other government
manufacturing  regulations. Cholestech's manufacturing facilities are subject to
periodic inspection by regulatory  authorities. See "-- Government  Regulation."
Certain key components and
 
                                       36
<PAGE>
raw  materials used in the manufacturing of the Company's products are currently
provided by single-source  vendors pursuant to  the Company's periodic  purchase
orders.  The  Company  believes that  it  maintains  an adequate  level  of such
components and raw materials in inventory and believes that alternative  sources
for  such  components  and  raw materials  are  available.  However,  any supply
interruption in a sole-sourced component or  raw material would have a  material
adverse  effect on  the Company's  business once  the inventory  is depleted and
until a  new  source of  supply  were  qualified. In  addition,  an  uncorrected
impurity  or  supplier's variation  in  a raw  material,  either unknown  to the
Company or incompatible with the  Company's manufacturing process, could have  a
material  adverse effect  on the  Company's business.  Because the  Company is a
small customer of  many of its  suppliers, there  can be no  assurance that  its
suppliers  will devote adequate resources to  supplying the Company's needs. See
"Risk Factors -- Dependence on Suppliers."
 
COMPETITION
 
    The testing market in which  the Company competes is intensely  competitive.
The  Company's competition consists mainly  of independent clinical laboratories
and hospital-based laboratories, as well as with manufacturers of bench top  and
other point of care analyzers. The substantial majority of diagnostic tests used
by  physicians  and  other  health care  providers  are  currently  performed by
clinical laboratories and hospital-based laboratories. The Company expects  that
these  laboratories will  compete intensely to  maintain their  dominance in the
monitoring market. In  order to achieve  broad market acceptance  for the  L-D-X
System,  the Company will be required to demonstrate that the L-D-X System is an
attractive alternative to the independent clinical laboratory and hospital-based
laboratory. This will require  physicians to change  their established means  of
having  such tests performed.  There can be  no assurance that  the L-D-X System
will  be  able  to  compete  with   the  testing  services  provided  by   these
laboratories.  See "Risk  Factors -- Uncertainty  of Market  Acceptance of L-D-X
System."
 
    In addition,  companies  having a  significant  presence in  the  diagnostic
market,  such as Abbott Laboratories, Clinical Diagnostic Systems, a division of
Johnson and Johnson which was formerly a division of Eastman Kodak Company,  and
Boehringer  Mannheim, have  developed or  are developing  analyzers targeted for
point  of  care.  These   competitors  have  substantially  greater   financial,
technical,  research and other resources and larger, more established marketing,
sales, distribution and  service organizations  than the  Company. In  addition,
such competitors offer broader product lines than the Company, have greater name
recognition  than the Company, and offer  discounts as a competitive tactic. The
Company believes  that  it  currently  has  a  competitive  advantage  with  the
classification  of  its  existing products  as  waived under  CLIA.  The Company
expects that the reclassification of the L-D-X System as waived under CLIA  will
result  in  competitors  seeking to  develop  products that  qualify  for waived
classification. There can be  no assurance that  the Company's competitors  will
not  succeed in obtaining CLIA waived status for their products or in developing
or marketing technologies or products  that are more effective and  commercially
attractive  than the Company's current or  future products, or that would render
the Company's technology or products obsolete or noncompetitive.
 
    The Company's products  must compete effectively  overall with the  existing
and  future products of its competitors primarily on the basis of the ability to
perform tests at point of care, ease of use, testing of multiple analytes from a
single sample, ability to conduct tests without a skilled technician or a  blood
pretreatment  step,  the  breadth  of  tests  available,  market  presence, cost
effectiveness, precision,  accuracy or  immediacy of  results. There  can be  no
assurance  that  the  Company  will  have  the  financial  resources,  technical
expertise  or  marketing,  distribution  or  support  capabilities  to   compete
successfully  in  the  future.  See  "Business  --  Products  --  Products Under
Development -- Technology and -- Competition."
 
PATENTS AND PROPRIETARY TECHNOLOGY
 
    The Company pursues  an active  patenting policy to  protect inventions  and
technology  which are important  to its business. The  Company owns eight United
States patents covering various aspects of the
 
                                       37
<PAGE>
technology incorporated in its products, including the method for separating HDL
from other  lipoproteins in  a dry  chemistry format,  the basic  design of  the
testing  cassette and the  L-D-X Analyzer and  the method of  correcting for the
effects of substances  that can interfere  with testing of  a blood sample.  The
Company  has also filed patent applications  relating to its core inventions and
technology internationally under  the Patent Cooperation  Treaty and  individual
foreign  applications. The  Company is  also the  licensee of  one United States
patent relating to the measurement of Lp(a) and a number of third party  patents
relating to its cassette technology.
 
    The medical products industry has been characterized by extensive litigation
regarding  patents  and other  intellectual property  rights, and  any potential
litigation can  result in  substantial  loss or  diversion  of revenues  of  the
Company and could have a material adverse effect on the Company. There can be no
assurance that pending patent applications filed by the Company will be approved
or  that the issued or pending patents will not be challenged or circumvented by
competitors. Notwithstanding the Company's active pursuit of patent  protection,
the  Company believes  that its  future success  will depend  primarily upon the
technical expertise, creative skills and  management abilities of its  officers,
directors and key employees rather than on patent ownership.
 
    There  can be no assurance that infringement  claims will not be asserted by
other parties in the future, that in such event the Company will prevail or that
it will be able to obtain  licenses on reasonable terms. Adverse  determinations
in  any litigation could subject the  Company to significant liabilities and/ or
require the  Company to  seek licenses  from third  parties. If  the Company  is
unable  to  obtain  necessary licenses  or  is  unable to  develop  or implement
alternative technology, the Company  may be unable to  manufacture and sell  the
affected products. Any of these outcomes could have a material adverse effect on
the Company's business.
 
    The  Company relies substantially  on trade secrets,  technical know-how and
continuing invention  to  develop and  maintain  its competitive  position.  The
Company works actively to foster continuing technological innovation to maintain
and  protect  its  competitive  position, and  the  Company  has  taken security
measures to protect its trade secrets and periodically explores ways to  further
enhance trade secret security. There can be no assurance that such measures will
provide adequate protection for the Company's trade secrets or other proprietary
information.  Although  the  Company has  entered  into  proprietary information
agreements with  its  employees,  consultants  and advisors,  there  can  be  no
assurance  that these  agreements will  have adequate  remedies for  any breach.
There can be no assurance that the Company's competitors will not  independently
develop  substantially  equivalent  proprietary  information  and  techniques or
otherwise  gain  access  to  the  Company's  trade  secrets  or  disclose   such
technology,  or that the Company can meaningfully protect its right to its trade
secrets.
 
GOVERNMENT REGULATION
 
    FDA REGULATIONS.   The manufacture and  sale of the  Company's products  are
subject  to regulation by numerous governmental authorities, principally the FDA
and corresponding state  and foreign  regulatory agencies. Pursuant  to the  FDC
Act, the FDA regulates the clinical testing, manufacture, labeling, distribution
and promotion of medical devices. Noncompliance with applicable requirements can
result  in, among other  things, fines, injunctions,  civil penalties, recall or
seizure of products, total or partial  suspension of production, failure of  the
government  to  grant premarket  clearance  or premarket  approval  for devices,
withdrawal of marketing approvals, a recommendation by the FDA that the  Company
not  be permitted to  enter into government  contracts and criminal prosecution.
The FDA also has the authority to  request repair, replacement or refund of  the
cost of any device manufactured or distributed by the Company.
 
    In  the  United States,  medical devices  are classified  into one  of three
classes, Class I, II or III, on the  basis of the controls deemed by the FDA  to
be  necessary  to  reasonably ensure  their  safety and  effectiveness.  Class I
devices are subject to general  controls (e.g. labeling, premarket  notification
and adherence to cGMPs). Class II devices are subject to general controls and to
special controls (e.g. performance
 
                                       38
<PAGE>
standards,  postmarket  surveillance, patient  registries, and  FDA guidelines).
Generally, Class III devices are those  that must receive premarket approval  by
the  FDA  to  assure  their  safety  and  effectiveness  (e.g.  life-sustaining,
life-supporting and  implantable devices,  or new  devices which  have not  been
found  substantially  equivalent  to  legally  marketed  devices),  and  require
clinical testing to assure  safety and effectiveness and  FDA approval prior  to
marketing and distribution.
 
    Before a new device can be introduced into the market, the manufacturer must
generally  obtain marketing  clearance through  a pre-market  notification under
Section 510(k) of the FDC Act or an approval of a PMA application under  Section
515  of  the  FDC Act.  A  510(k) clearance  typically  will be  granted  if the
submitted information  establishes that  the proposed  device is  "substantially
equivalent" to a legally marketed Class I or II medical device or to a Class III
medical  device for which the FDA has not called for PMAs. A 510(k) notification
must contain information to  support a claim  of substantial equivalence,  which
may  include laboratory test results  or the results of  clinical studies of the
device in humans. It generally takes from four to twelve months from the date of
submission to  obtain  a  510(k) clearance,  but  it  may take  longer.  A  "not
substantially  equivalent" determination by the FDA, or a request for additional
information, could delay the market introduction of new products that fall  into
this  category. For  any devices  that are  cleared through  the 510(k) process,
modifications  or  enhancements  that  could  significantly  affect  safety   or
effectiveness,  or constitute a major change in  the intended use of the device,
will require new 510(k)  submissions. The L-D-X Analyzer  and all existing  test
cassettes  required that the Company obtain  510(k) clearance prior to marketing
in the United States.
 
    In general,  the Company  intends  to develop  and  market tests  that  will
require  no more than 510(k) clearance. However, if the Company cannot establish
that a proposed test cassette is substantially equivalent to a legally  marketed
device,  the Company must seek pre-market approval of the proposed test cassette
from the FDA through the submission of a PMA application. Certain products under
development,  including  the  Prostate   Specific  Antigen  test,  may   require
submission  of a PMA  application. A PMA application  generally must contain the
results of clinical trials, the results of all relevant bench tests,  laboratory
and animal studies, a complete description of the device and its components, and
a  detailed  description  of  the  methods,  facilities  and  controls  used  to
manufacture the device. In  addition, the submission  must include the  proposed
labeling,  advertising  literature  and  training  methods  (if  required). Upon
receipt of a  PMA application,  the FDA makes  a threshold  determination as  to
whether the application is sufficiently complete to permit a substantive review.
If  the  FDA determines  that the  PMA application  is sufficiently  complete to
permit a substantive review, the FDA will accept the application for filing.  An
FDA review of a PMA application generally takes one to three years from the date
the PMA application is accepted for filing, but may take significantly longer.
 
    Any  products manufactured  or distributed  by the  Company pursuant  to FDA
clearance or approvals are subject to pervasive and continuing regulation by FDA
and certain state agencies, including record keeping requirements and  reporting
of  adverse  experience with  the use  of the  device. Labeling  and promotional
activities are subject to scrutiny by FDA and, in certain circumstances, by  the
Federal Trade Commission. Current FDA enforcement policy prohibits the marketing
of approved medical devices for unapproved uses.
 
    The  FDC  Act  regulates  the Company's  quality  control  and manufacturing
procedures  by  requiring  the  Company   and  its  contract  manufacturers   to
demonstrate  compliance  with  cGMP.  The  FDA  monitors  compliance  with these
requirements by requiring manufacturers to register with the FDA, which subjects
them to  periodic  inspections.  While the  Company's  manufacturing  processes,
facilities  and  practices  have not  been  inspected  by the  FDA,  the Company
believes that its manufacturing practices are in compliance with cGMP. The State
of California also regulates and inspects Cholestech's manufacturing facilities.
The Company has been inspected twice by  the State of California to date and  is
manufacturing under an issued medical device manufacturers facility license from
the  State of California. If violations  of the applicable regulations are noted
during  FDA  inspection  of  the  Company's  manufacturing  facilities  or   the
manufacturing  facilities of its contract manufacturers, the continued marketing
of the Company's product could be adversely affected.
 
                                       39
<PAGE>
    CLIA REGULATIONS.  The use of the Company's products in the United States is
subject to CLIA, which provides for federal regulation of laboratory testing, an
activity also  regulated  by most  states.  Laboratories either  must  obtain  a
registration  certificate  from HCFA,  register  with an  approved accreditation
agency or obtain a state  license in a state  with a federally approved  license
program.  The CLIA regulations seek to ensure the quality of medical testing and
generally took effect  in September  1992 with  a two-year  phase-in of  certain
requirements.  The three  primary mechanisms to  accomplish this  goal are daily
quality control requirements to  ensure the accuracy  of laboratory devices  and
procedures,  proficiency  testing  to measure  testing  accuracy,  and personnel
standards to assure appropriate training and experience for laboratory  workers.
CLIA  categorizes tests as "waived," or as being "moderately complex" or "highly
complex" on the basis of specific criteria.
 
    Prior to January 1996,  the L-D-X System,  including all current  cassettes,
was  categorized under  CLIA as moderately  complex. In January  1996, the L-D-X
System and the TC, HDL, Triglycerides and Glucose tests in any combination  were
reclassified  as waived under  CLIA. Under the  waived classification, users are
only required to obtain a  certificate of waiver from HCFA  and pay a $100  fee.
This  certificate must be  renewed every two years.  Current L-D-X System users,
including managed  care organizations,  hospitals, self-insured  businesses  and
health  promotion organizations, will now  be able to use  the L-D-X System at a
lower cost. The Company provides United  States purchasers of its products  with
the  documentation, systems  and support necessary  for the  purchaser to comply
with CLIA. In order to successfully  commercialize the tests that are  currently
under  development,  the Company  believes that  it will  be critical  to obtain
waived classification for such tests under CLIA. There can be no assurance  that
any   new  tests  developed   by  the  Company  will   qualify  for  the  waived
classification. Any failure of the new tests to obtain waived status under  CLIA
will  adversely impact the Company's ability  to commercialize such tests, which
could have  a  material adverse  effect  on the  Company's  business,  financial
condition and results of operations. In addition, there can be no assurance that
any  future  amendment of  CLIA or  the  promulgation of  additional regulations
impacting laboratory testing will  not have an adverse  effect on the  Company's
ability  to market  the L-D-X  System. If  CLIA regulations  were modified  in a
manner that reduced  regulatory requirements  and burdens  faced by  competitive
products, any competitive advantage of the L-D-X System's waived status would be
reduced or eliminated.
 
    The  public and the  federal government have  continued to focus significant
attention on reforming  the health  care system in  the United  States. A  broad
range  of health care reform measures have been suggested, and public discussion
of such measures will likely continue in the future. Certain of the  preliminary
proposals  entail spending limits, price  controls, and limitations on increases
in insurance premiums. Although the  Company believes the L-D-X System  responds
to  the concerns  about such proposals  by enabling delivery  of quality medical
services at reduced costs,  concern about such proposals  has been reflected  in
volatility  of  the  stock  prices  of  companies  in  health  care  and related
industries. The Company cannot predict which,  if any, of such reform  proposals
will  be adopted, when they may  be adopted or what impact  they may have on the
Company. The adoption of certain of the proposals could have a material  adverse
effect on the Company's operations.
 
    The  Company and  its products are  also subject  to a variety  of state and
local laws and regulations in those states or localities where its products  are
or  will be  marketed. Any  applicable state  or local  laws or  regulations may
hinder the  Company's  ability  to  market  its  products  in  those  states  or
localities.
 
    Manufacturers  are also  subject to numerous  federal, state  and local laws
relating to such  matters as safe  working conditions, manufacturing  practices,
environmental  protection,  fire hazard  control  and disposal  of  hazardous or
potentially hazardous substances.  There can  be no assurance  that the  Company
will  not be required  to incur significant  costs to comply  with such laws and
regulations now or in the future or that such laws or regulations will not  have
a material adverse effect upon the Company.
 
    Changes in existing requirements or adoption of new requirements or policies
could  adversely affect  the ability  of the  Company to  comply with regulatory
requirements. Failure  to  comply  with regulatory  requirements  could  have  a
material  adverse effect  on the  Company. There  can be  no assurance  that the
 
                                       40
<PAGE>
Company will not be required to incur significant costs to comply with laws  and
regulations  in the future or that laws  or regulations will not have a material
adverse effect upon the Company. See "Risk Factors -- Government Regulation."
 
THIRD PARTY REIMBURSEMENT
 
    In  the  United  States,  health  care  providers,  such  as  hospitals  and
physicians,  that purchase  diagnostic products,  including the  Company's L-D-X
System, generally  rely  on  third  party  payors,  principally  private  health
insurance  plans, federal Medicare and state  Medicaid, to reimburse all or part
of the cost of the procedure in  which the product is being used. The  Company's
ability  to commercialize  its products successfully  in the  United States will
depend in  part on  the  extent to  which reimbursement  for  the cost  of  such
products  and  related  treatment  will  be  available  from  government  health
administration  authorities   (such   as   HCFA,   which   determines   Medicare
reimbursement  levels), private  health insurers  and other  organizations. Such
third party payors can affect the pricing or the relative attractiveness of  the
Company's products by regulating the maximum amount of reimbursement provided by
such  payors for testing services. Reimbursement  is currently not available for
certain uses  of the  Company's products.  For example,  the cost  of the  L-D-X
Analyzer  is generally not subject to reimbursement by government or other third
party payors. In  addition, the  tests performed by  public health  departments,
corporate wellness programs and other large volume users in the screening market
are  generally not  subject to reimbursement.  In addition,  certain health care
providers are  moving towards  a managed  care system  in which  such  providers
contract  to provide  comprehensive health  care for  a fixed  cost per patient.
Managed care providers  are attempting  to control the  cost of  health care  by
authorizing  fewer  elective  procedures,  such as  screening  of  blood disease
levels. The  Company is  unable to  predict what  changes will  be made  in  the
reimbursement  methods  utilized by  third party  payors.  The Company  could be
adversely affected  by  changes in  reimbursement  policies of  governmental  or
private  health care payors, particularly to  the extent any such changes affect
reimbursement for procedures  in which  the Company's products  are used.  Third
party  payors are increasingly  scrutinizing and challenging  the prices charged
for medical products and services. Decreases in reimbursement amounts for  tests
performed using the Company's products may decrease amounts physicians and other
practitioners  are able to  charge patients, which in  turn may adversely affect
the Company's ability  to sell its  products on a  profitable basis. Failure  by
physicians  and other users to obtain  reimbursement from third party payors, or
changes  in  government  and  private   third  party  payors'  policies   toward
reimbursement  of tests employing  the Company's products  could have a material
adverse effect  on the  Company's business.  Given the  efforts to  control  and
reduce  health care costs in the United States  in recent years, there can be no
assurance that currently available levels  of reimbursement will continue to  be
available,  or that adequate  reimbursement will be available  in the future for
the Company's existing products or products under development. See "Risk Factors
- -- Uncertainty Relating to Third Party Reimbursement."
 
    Effective October 1, 1991,  HCFA adopted new  regulations providing for  the
inclusion  of  capital-related costs  in the  prospective payment  system, under
which providers are reimbursed on a
per-diagnosis basis at  fixed rates unrelated  to actual costs,  based on  DRGs.
Under  this  system  of reimbursement,  equipment  costs generally  will  not be
reimbursed separately, but rather, will be included in a single, fixed-rate, per
patient reimbursement. These  regulations are  being phased in  over a  ten-year
period,  and, although the full implications  of these regulations cannot yet be
known, the Company believes that the new regulations will place more pressure on
hospitals' operating margins, causing them to limit capital expenditures.  These
regulations  could have an adverse effect on  the Company if hospitals decide to
defer obtaining medical equipment  as a result of  any such limitation on  their
capital  expenditures. The Company  is unable to predict  what adverse impact on
the  Company,  if  any,   additional  government  regulations,  legislation   or
initiatives  or changes by other payors affecting reimbursement or other matters
that may influence decisions to obtain medical equipment may have.
 
                                       41
<PAGE>
    In addition, market  acceptance of the  Company's products in  international
markets  is dependent,  in part, upon  the availability  of reimbursement within
prevailing health care  payment systems. Reimbursement  and health care  payment
systems in international markets vary significantly by country, and include both
government sponsored health care and private insurance.
 
    The  Company believes that  the overall escalating  cost of medical products
and services has led to and will continue to lead to increased pressures on  the
health  care industry, both foreign and domestic, to reduce the cost of products
and services,  including  products offered  by  the  Company. There  can  be  no
assurance  as  to  either United  States  or  foreign markets  that  third party
reimbursement  and  coverage  will  be  available  or  adequate,  that   current
reimbursement  amounts  will  not be  decreased  in  the future  or  that future
legislation, regulation, or  reimbursement policies of  third party payors  will
not  otherwise adversely  affect the  demand for  the Company's  products or its
ability to sell its products on a profitable basis.
 
PRODUCT LIABILITY AND INSURANCE
 
    Sale of the Company's products entails risk of product liability claims. The
medical testing industry has historically been litigious, and the Company  faces
financial  exposure to  product liability  claims in the  event that  use of its
products result in personal injury. The Company also faces the possibility  that
defects in the design or manufacture of its products might necessitate a product
recall.  There can be no  assurance that the Company  will not experience losses
due to product liability claims or recalls in the future. The Company  currently
maintains  product liability insurance with coverage  limits of $5.0 million per
occurrence and  $5.0 million  annually in  the aggregate,  and there  can be  no
assurance  that the coverage limits of  the Company's insurance policies will be
adequate. Such  insurance is  expensive,  difficult to  obtain  and may  not  be
available  in the  future on acceptable  terms, or  at all. No  assurance can be
given that product  liability insurance  can be maintained  in the  future at  a
reasonable  cost or in sufficient amounts  to protect the Company against losses
due to liability. An inability to maintain insurance at an acceptable cost or to
otherwise protect against potential product  liability could prevent or  inhibit
the  continued  commercialization  of  the Company's  products.  In  addition, a
product liability  claim in  excess of  relevant insurance  coverage or  product
recall could have a material adverse effect on the Company's business, financial
condition and results of operations.
 
    The  Company has  liability insurance  covering its  property and operations
with coverage and deductible amounts  and exclusions which the Company  believes
are  customary for companies of its size in its industry. The Company's personal
property is insured  for up  to $4.0 million  and it  has comprehensive  general
liability  coverage of up to $5.0 million. In addition, the Company has business
interruption insurance of up to $5.6 million. There can be no assurance that the
Company's current insurance  coverage is  adequate or that  it will  be able  to
maintain  insurance  at  an  acceptable cost  or  otherwise  to  protect against
liability.
 
EMPLOYEES
 
    As of March  31, 1996, the  Company employed 79  full-time employees.  There
were  33 employees  in sales, marketing  and administration and  42 employees in
manufacturing and 4 employees devoted  to research and development. The  Company
seeks  to attract  and retain  skilled and  experienced employees  with directly
relevant experience  in  the  fields  of interest,  although  there  can  be  no
assurance  that  it will  continue  to do  so  in the  future.  The loss  of key
personnel or the inability to hire or retain qualified personnel, in  particular
a  new executive officer  of sales could  have a material  adverse effect on the
Company's business, financial condition and  results of operations. None of  the
employees  is  covered  by  a collective  bargaining  agreement,  and management
considers relations with employees to be excellent.
 
                                       42
<PAGE>
FACILITIES
 
    The Company leases a 30,000 square foot facility in Hayward, California. The
Company's facility contains approximately 5,000 square feet of laboratory space,
7,000 square feet of  manufacturing space and  approximately 18,000 square  feet
devoted to marketing and administrative and common areas. The Company's lease on
the  facility expires in the year 2000.  The Company believes that this facility
is adequate to meet its requirements through the expiration of its lease.
 
LEGAL PROCEEDINGS
 
    The Company is not a party to any legal proceedings.
 
                                       43
<PAGE>
                                   MANAGEMENT
 
DIRECTORS AND EXECUTIVE OFFICERS
 
    The following table sets forth certain information concerning the  directors
and executive officers of the Company as of May 7, 1996.
 
<TABLE>
<CAPTION>
                    NAME                           AGE                                POSITION
- ---------------------------------------------      ---      ------------------------------------------------------------
<S>                                            <C>          <C>
Warren E. Pinckert II........................          52   President, Chief Executive Officer and Director
Steven L. Barbato............................          46   Vice President of Manufacturing
Gary E. Hewett...............................          44   Vice President of Diagnostic Development
Richard H. Janney............................          37   Vice President of Finance and Chief Financial Officer
Harvey S. Sadow, Ph.D. (1)(2)................          73   Chairman of the Board of Directors
Joseph Buchman, M.D. (1).....................          66   Director
John L. Castello (2).........................          60   Director
H.R. Shepard (1).............................          75   Director
</TABLE>
 
- --------------
(1) Member of the Audit Committee.
(2) Member of the Compensation Committee.
 
    WARREN E. PINCKERT II joined the Company as Chief Financial Officer and Vice
President of Business Development in 1989 and became Secretary in February 1990.
Mr.  Pinckert became  Executive Vice President  of Operations in  May 1991 while
retaining his previous positions.  In June 1993,  Mr. Pinckert became  President
and  Chief Executive Officer and was appointed  to the Board of Directors. Prior
to joining Cholestech, he was Chief Financial Officer for Sunrise Medical  Inc.,
an  international durable medical equipment manufacturer, from 1983 to 1989. Mr.
Pinckert also serves on the Board  of Directors of PacifiCare Health Systems,  a
managed  care  organization. Mr.  Pinckert earned  a B.S.  in Accounting  and an
M.B.A. from the  University of  Southern California  and is  a certified  public
accountant.
 
    STEVEN  L. BARBATO joined the Company  as Vice President of Manufacturing in
May 1992. From 1990  to January 1992,  Mr. Barbato served  as Vice President  of
Operations   of  the  Pandex  Division  of  Baxter  Diagnostics,  Inc.  ("Baxter
Diagnostics"), a biotechnical  instrument and reagent  development division  and
served  in other capacities at Baxter Diagnostics from January 1992 to May 1992.
From 1989  to 1990,  Mr. Barbato  served as  Director of  Manufacturing for  the
Paramax  Chemistry  Division  of Baxter  Diagnostics,  a  division manufacturing
automated whole blood analyzers. From 1987 to 1989, Mr. Barbato was employed  as
Manager  of  Manufacturing by  the Pandex  Division  of Baxter  Diagnostics. Mr.
Barbato earned a B.S. in  Chemical Engineering from Northeastern University  and
an M.B.A. from Xavier University.
 
    GARY E. HEWETT, a co-founder of the Company, has served as Vice President of
Diagnostic Development since the Company's inception in 1988. From 1985 to 1988,
Mr.  Hewett was  employed by  Genelabs, Inc.,  a biotechnology  company, as Vice
President of  Diagnostics.  Prior to  1985,  he was  employed  in a  variety  of
management   and  technical   positions  at   the  following   companies:  Cetus
Corporation, a biotechnology firm, from 1983 to 1985; Molecular Design, Inc.,  a
computer  software  company, from  1980 to  1983;  Beckman Instruments,  Inc., a
clinical instrument company, from 1978 to 1983; and Durrum Instrument (Dionics),
an analytical instrument firm, from  1975 to 1978. Mr.  Hewett earned a B.A.  in
Neurophysiology from the University of California, Berkeley.
 
    RICHARD  H. JANNEY  joined the Company  in September 1992  as Controller and
became Vice President  of Finance  and Chief  Financial Officer  in March  1995.
Prior  to joining the Company, he was employed by Price Waterhouse LLP from 1984
to September 1992.  Mr. Janney  earned a  B.S. in  Business Administration  from
California  Polytechnic State University  at San Luis Obispo  and is a certified
public accountant.
 
    HARVEY S. SADOW, PH.D. has been a Director of the Company since January 1990
and has  served as  Chairman of  the Board  of Directors  of the  Company  since
February 1992. He was President and Chief
 
                                       44
<PAGE>
Executive  Officer of Boehringer  Ingelheim Corporation, a  health care company,
from 1971 to 1988, and of Boehringer Ingelheim Pharmaceuticals, Inc., an ethical
specialty  pharmaceutical  company,  from  1984  to  1988.  In  1988  upon   his
retirement,  he became  Chairman of  the Board  of Directors  of both Boehringer
Ingelheim Corporation and Boehringer  Ingelheim Pharmaceuticals, Inc. Dr.  Sadow
retired as Chairman of both companies in December 1990 and remained on the Board
of Directors of both companies until December 1992. From 1967 to 1971, Dr. Sadow
was  Senior  Vice President,  Scientific Affairs,  of the  U.S.V. Pharmaceutical
Corporation, Revlon Health  Care Division.  He also  serves as  Chairman of  the
Board of Directors of Cortex Pharmaceuticals, Inc., a neuroscience company; as a
director  of Anika  Research Corporation, a  research company; as  a director of
Cytel  Corporation,   a  pharmaceutical   company;   a  director   of   Houghten
Pharmaceutical  Inc., a pharmaceutical  company; and as  a director of Penederm,
Inc., a dermatologic product company. Dr. Sadow earned a B.S. from the  Virginia
Military  Institute, an M.S. from the University  of Kansas and a Ph.D. from the
University of Connecticut.
 
    JOSEPH BUCHMAN, M.D. has been a Director of the Company since July 1994.  He
is  a practicing  physician with a  private practice in  Ridgefield and Danbury,
Connecticut. He is a certified member of the American Board of Internal Medicine
and Cardiovascular Disease. Dr. Buchman is currently director of the  Preventive
Cardiology  Program for Danbury Hospital Health  Services, and has been a member
of  the  Cardiothoracic  and  Vascular  Group,  a  professional  corporation  in
Ridgefield,  Connecticut since  1992. Prior  to 1992,  Dr. Buchman  maintained a
private medical practice.  Dr. Buchman  has published numerous  articles on  the
subject  of  coronary risk  factors.  Dr. Buchman  earned  a B.A.  from Wesleyan
University and a M.D. from New York University, College of Medicine.
 
    JOHN L. CASTELLO has been a Director of the Company since August 1993. He is
the Chairman  of  the Board,  President  and  Chief Executive  Officer  of  Xoma
Corporation  ("Xoma"), a  biotechnology company.  He joined  Xoma in  April 1992
after serving as President and Chief Operating Officer of the Ares Serono Group,
a Swiss ethical pharmaceutical company, from  1988 to August 1991, and prior  to
that he was President of the Serano Diagnostics Division from 1986 to 1988. From
1977  to  1986,  Mr.  Castello  held  senior  management  positions  at Amersham
International PLC and Abbott Laboratories. Mr. Castello also serves on the Board
of Directors of Metra Biosystems, Inc. Mr. Castello earned a B.S. in  Mechanical
and Industrial Engineering from Notre Dame University.
 
    H.  R. SHEPHERD has been a director of  the Company since July 1994. He is a
special advisor to  the Chairman of  the Board  of Directors of  Medeva PLC,  an
international  pharmaceuticals company,  and is  a founder  and Chairman  of the
Board of the Albert B. Sabin Vaccine Foundation. Mr. Shepherd served as Chairman
and Chief Executive Officer of Armstrong Pharmaceuticals, a company specializing
in aerosol  pharmaceutical packaging  and labeling,  from 1985  to August  1993,
before  it was acquired by  Medeva PLC. Mr. Shepherd  earned a B.S. from Cornell
University and a Honorary Doctorate of Humane Letter from Villanova University.
 
    All directors are elected  at each annual meeting  of shareholders and  hold
office  until the  election and  qualification of  their successors  at the next
annual meeting of shareholders. Officers of the Company serve at the  discretion
of the Board of Directors. There are no family relationships among the Company's
directors and executive officers.
 
DIRECTORS' COMPENSATION
 
    Nonemployee  directors who do  not represent shareholders  holding more than
one percent of the outstanding shares ("Outside Directors") receive a $1,000 fee
for each meeting  of the  Board of  Directors attended.  Outside Directors  also
receive  a $500  fee for  each meeting  of the  Audit or  Compensation Committee
attended that is not in conjunction  with a regular board meeting. In  addition,
the 1988 Stock Incentive Program provides that options to purchase the Company's
Common Stock may be granted to
 
                                       45
<PAGE>
Outside  Directors pursuant  to a  nondiscretionary, automatic  grant mechanism,
whereby each such director is granted an option to purchase 10,000 shares on the
date of each annual meeting of  shareholders. Pursuant to the provisions of  the
1988  Stock Incentive  Program, in  August 1995  Dr. Buchman,  Mr. Castello, Dr.
Sadow and Mr. Shepherd were each granted nonstatutory options to purchase 10,000
shares of the Company's Common  Stock at an exercise  price of $2.25 per  share.
See "-- 1988 Stock Incentive Program."
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    The   Compensation  Committee  is   responsible  for  determining  salaries,
incentives and other  forms of  compensation for directors,  officers and  other
employees  of  the Company  and administers  various incentive  compensation and
benefit plans.  The  Compensation  Committee consists  of  directors  Sadow  and
Castello.   There  are  no  interlocking  relationships,  as  described  by  the
Securities and Exchange Commission, between the Compensation Committee  members.
See "-- 1988 Stock Incentive Program" and "-- Employee Stock Purchase Plan."
 
EXECUTIVE COMPENSATION
 
    The  following table sets forth  for the fiscal years  ended March 31, 1996,
1995 and 1994, compensation awarded to, paid to or earned by, (i) the  Company's
Chief Executive Officer and (ii) the Company's next four most highly compensated
executive  officers whose salary  and bonus exceeded  $100,000 during the fiscal
year ended March 31, 1996 (the "Named Executive Officers").
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                               LONG-TERM
                                                                                              COMPENSATION
                                                                                                 AWARDS
                                                        ANNUAL COMPENSATION                  --------------
                                         --------------------------------------------------    SECURITIES
                                                                             OTHER ANNUAL      UNDERLYING         ALL OTHER
      NAME AND PRINCIPAL POSITION          YEAR     SALARY($)   BONUS($)   COMPENSATION(1)     OPTIONS(#)    COMPENSATION(2)($)
- ---------------------------------------  ---------  ----------  ---------  ----------------  --------------  -------------------
<S>                                      <C>        <C>         <C>        <C>               <C>             <C>
Warren E. Pinckert II(3) ..............       1996  $  145,440  $  --         $   --              10,000          $   6,050
 President and Chief                          1995     153,333     --             --             249,958(5)           6,143
 Executive Officer                            1994     155,833     10,000         --             209,958              6,193
Gary E. Hewett ........................       1996     131,191     --             39,336           --                 1,863
 Vice President of Diagnostic                 1995     130,000     10,000          4,278          70,000(5)           4,255
 Development                                  1994     130,000     --             11,605           --                 4,055
Linda H. Masterson(4) .................       1996     131,000     --             19,967           5,000              2,289
 Executive Vice President of Marketing        1995     114,750     --             17,922          90,000              2,063
 and Sales                                    1994      --         --             --               --                --
Steven L. Barbato .....................       1996     106,050     --             --               3,000              5,914
 Vice President of                            1995     104,167     10,000         25,350          45,000(6)           5,971
 Manufacturing                                1994      95,000      6,891         36,075          10,000              6,048
</TABLE>
 
- --------------
(1) The amounts  described hereunder  were paid by  the Company  as follows:  In
    fiscal 1996, to Mr. Hewett, $35,640 for forgiveness of a loan and $3,696 for
    the  compensation  paid  in  connection  with  the  Company's  Research  and
    Development Incentive Program; and to Ms. Masterson, $14,545 for  relocation
    expenses  and  $5,422  for  income taxes  paid  on  nonreimbursed relocation
    expense. In fiscal 1995, to Mr. Hewett $2,851 and $917 for forgiveness of  a
    loan and income taxes paid on the forgiveness of the loan, respectively, and
    $510 for the compensation paid in connection with the Company's Research and
    Development  Incentive  Program;  to Ms.  Masterson  $17,922  for relocation
 
                                       46
<PAGE>
    expenses; and to  Mr. Barbato $25,350  for the forgiveness  of a  relocation
    loan.  In fiscal 1994, to Mr. Hewett  $8,554 and $3,051 for forgiveness of a
    loan and income taxes paid on the forgiveness of the loan, respectively; and
    to Mr. Barbato $36,078 for the forgiveness of a relocation loan.
 
(2) The amounts  described hereunder were  paid by the  Company for premiums  on
    group term life insurance and medical and dental insurance.
 
(3) In October 1994, Mr. Pinckert voluntarily reduced his compensation by 10%.
 
(4)  Ms. Masterson joined the Company in May 1994 and resigned as Executive Vice
    President of Marketing and Sales in April 1996.
 
(5) Represents options granted pursuant  to an option exchange program  approved
    by  the Board of  Directors in August  1994. See description  under "-- 1988
    Stock Incentive Program."
 
(6) Includes 35,000  shares subject  to options  granted pursuant  to an  option
    exchange  program approved  by the  Board of  Directors in  August 1994. See
    description under "-- 1988 Stock Incentive Program."
 
                              STOCK OPTION GRANTS
 
    The following table provides information  relating to stock options  awarded
to  each of the Named Executive Officers  during the fiscal year ended March 31,
1996. All such  options were awarded  under the Company's  1988 Stock  Incentive
Program.
 
                       OPTION GRANTS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                                                                                      POTENTIAL REALIZABLE
                                                                                                        VALUE AT ASSUMED
                                                              INDIVIDUAL GRANTS                         ANNUAL RATES OF
                                          ----------------------------------------------------------      STOCK PRICE
                                           NUMBER OF   PERCENT OF TOTAL                                 APPRECIATION FOR
                                          UNDERLYING    OPTIONS GRANTED     EXERCISE                     OPTION TERM(5)
                                            OPTIONS     TO EMPLOYEES IN     PRICE PER    EXPIRATION   --------------------
                  NAME                    GRANTED(#)    FISCAL YEAR(1)     SHARE(2)(3)     DATE(4)      5%($)     10%($)
- ----------------------------------------  -----------  -----------------  -------------  -----------  ---------  ---------
<S>                                       <C>          <C>                <C>            <C>          <C>        <C>
Warren E. Pinckert II...................      10,000            4.7%        $    2.25      10/30/00   $   6,216  $  13,736
Linda H. Masterson(6)...................       5,000            2.3              2.25      10/30/00         563      1,125
Steven L. Barbato.......................       3,000            1.4              2.25      10/30/00       1,865      4,121
Gary E. Hewett(7).......................      --              --               --            --          --         --
</TABLE>
 
- --------------
(1)  Based  on an  aggregate of  212,923  options granted  under the  1988 Stock
    Incentive Program.
 
(2) Options were granted at an exercise price equal to the fair market value  of
    the  Company's Common Stock, as determined by  the Board of Directors on the
    date of grant.
 
(3) Exercise price may be paid in  cash, check, promissory note, by delivery  of
    already-owned  shares  of  the  Company's Common  Stock  subject  to certain
    conditions, or pursuant  to a  cashless exercise procedure  under which  the
    optionee  provides irrevocable instructions to a  brokerage firm to sell the
    purchased shares and to remit to the  Company, out of the sale proceeds,  an
    amount equal to the exercise price plus all applicable withholding taxes.
 
(4)  The  stock options  granted in  the fiscal  year ended  March 31,  1996 are
    exercisable starting three months after the date of grant, with 6.25% of the
    shares covered  thereby  becoming  exercisable  at that  time  and  with  an
    additional  6.25% of  the option shares  becoming exercisable at  the end of
    each three  month period  thereafter,  with full  vesting occurring  on  the
    fourth  anniversary of  the date  of grant.  Under the  1988 Stock Incentive
    Program, the Board retains the discretion to modify the terms, including the
    price, of outstanding options.
 
(5) Potential realizable value is based on the assumption that the Common  Stock
    of  the Company appreciates  at the annual  rate shown (compounded annually)
    from the date of grant until the
 
                                       47
<PAGE>
    expiration of the five year option term. These numbers are calculated  based
    on  the requirements promulgated  by the Securities  and Exchange Commission
    and do not reflect the Company's estimate of future stock price growth.
 
(6) Ms. Masterson resigned as Executive Vice President of Marketing and Sales in
    April 1996.
 
(7) Mr. Hewett is eligible to receive cash bonuses under the Company's  Research
    and Development Incentive Program.
 
    The following table sets forth certain information regarding the exercise of
stock options by the Named Executive Officers during the fiscal year ended March
31,  1996 and  stock options held  as of March  31, 1996 by  the Named Executive
Officers.
 
       OPTION EXERCISES IN FISCAL 1996 AND FISCAL YEAR-END OPTION VALUES
 
<TABLE>
<CAPTION>
                                                             NUMBER OF SECURITIES        VALUE OF UNEXERCISED
                                   SHARES                   UNDERLYING UNEXERCISED       IN-THE-MONEY OPTIONS
                                  ACQUIRED      VALUE             OPTIONS(#)                    ($)(2)
                                 ON EXERCISE   REALIZED   --------------------------  --------------------------
             NAME                    (#)        ($)(1)    EXERCISABLE  UNEXERCISABLE  EXERCISABLE  UNEXERCISABLE
- -------------------------------  -----------  ----------  -----------  -------------  -----------  -------------
<S>                              <C>          <C>         <C>          <C>            <C>          <C>
Warren E. Pinckert II..........       1,470   $    2,279     179,972        98,111     $ 562,847    $   312,232
Linda H. Masterson(3)..........      --           --          35,937        59,063       128,199        222,285
Steven L. Barbato..............      --           --          29,562        18,438        93,125         65,148
Gary E. Hewett.................      20,827      125,678      77,499        17,501       249,879         53,605
</TABLE>
 
- --------------
(1) Market value of underlying securities at date of exercise less the  exercise
    price,  but  does  not  necessarily  indicate  that  the  optionee  sold the
    underlying stock.
 
(2) Fair  market value  of the  Common  Stock as  of March  31, 1996  minus  the
    exercise price.
 
(3) Ms. Masterson resigned as Executive Vice President of Marketing and Sales in
    April 1996.
 
1988 STOCK INCENTIVE PROGRAM
 
    The  Company's  1988  Stock  Incentive Program  (the  "Option  Program") was
adopted in  1988. The  Option Program  provides for  the granting  to  employees
(including  officers and employee  directors) of incentive  stock options within
the meaning of Section 422 of the Internal Revenue Code of 1986, as amended, and
the granting of  nonstatutory stock options  to employees (including  officers),
directors  and consultants. The purpose of the  Option Program is to attract and
retain the best available personnel  to the Company and  to give them a  greater
personal  stake in the  success of the  Company. A total  of 1,550,000 shares of
Common Stock has been reserved for issuance under the Program.
 
    The Option Program is currently  administered by the Compensation  Committee
of  the Board of  Directors, which determines  the terms of  the options granted
under the Option Program, including the exercise price, number of shares subject
to the  option and  the exercisability  thereof. Generally,  options granted  to
employees  and consultants under the Option  Program vest and become exercisable
at a rate of 6.25% of the shares  subject to the option per quarter but may  not
be  exercised  prior to  one year  from  the commencement  of employment  or the
consultant  relationship.  The  terms  of   all  incentive  stock  options   and
nonstatutory  stock options granted under the  Option Program may not exceed ten
years and one day, although the Company generally grants options with five  year
terms.  However, the terms of all incentive stock options and nonstatutory stock
options  granted  to  an  optionee  who,  at  the  time  of  grant,  owns  stock
representing  more than  10% of the  voting rights of  the Company's outstanding
capital stock, may  not exceed five  years. No option  granted under the  Option
Program  may be transferred  by the optionee other  than by will  or the laws of
descent or distribution and each option may be exercised, during the lifetime of
the optionee, only by  such optionee. In  the event of a  merger of the  Company
with or into another corporation or a sale of substantially all of the Company's
assets,  each option will be assumed or  an equivalent option substituted by the
successor corporation unless the Compensation
 
                                       48
<PAGE>
Committee accelerates  the exercisability  of all  outstanding options.  Options
granted  to executive officers  and directors provide  that all unvested options
are accelerated  to vest  fully upon  the  sale, merger  or liquidation  of  the
Company.
 
    The  exercise price of all incentive  stock options granted under the Option
Program must be at  least equal to the  fair market value of  the shares on  the
date  of grant. With respect  to any participant who  owns stock possessing more
than 10% of the  voting rights of the  Company's outstanding capital stock,  the
exercise price of any incentive stock option granted must equal at least 110% of
the  fair market  value on  the grant  date. No  incentive stock  options may be
granted to a participant, which, when aggregated with all other incentive  stock
options  granted to such participant, would  have an aggregate fair market value
in excess of $100,000  becoming exercisable in any  calendar year. The  exercise
price of all nonstatutory stock options granted under the Option Program must be
at  least 85% of the fair market value of the Common Stock on the date of grant.
No options have been granted to date at prices less than 100% of the fair market
value on the date of grant.
 
    The Option  Program provides  that options  may not  be granted  to  Outside
Directors  who represent  significant shareholders. The  Option Program provides
that  options  may  be  granted  to   Outside  Directors  only  pursuant  to   a
nondiscretionary,  automatic grant  mechanism, whereby each  Outside Director is
automatically granted an option  to purchase 10,000 shares  on the date of  each
annual  meeting  of  shareholders. Each  new  Outside Director  that  becomes an
Outside Director within six months after an annual meeting of shareholders  will
automatically  be granted an option  to purchase 10,000 shares  upon the date on
which such person first becomes an Outside Director. Options granted to  Outside
Directors  have an exercise price  equal to the fair market  value of a share of
Common Stock on the date of grant and vest at a rate of 25% per calendar quarter
following the date of grant  so long as the optionee  remains a director of  the
Company.
 
    In  August  1994,  the  Compensation Committee  of  the  Board  of Directors
implemented a Stock  Option Exchange  Program (the "Exchange  Program") for  all
current  employees and consultants, including  the executive officers. Under the
Exchange Program all current employees and consultants owning stock options with
an exercise price  greater than $3.50  per share were  given the opportunity  to
exchange  their stock options for new options  having an exercise price of $3.50
per share. At the time of  the Committee action approving the Exchange  Program,
the  market value of the Company's common stock was $2.50 per share. In exchange
for the  opportunity to  exchange  stock options,  each employee  or  consultant
forfeited  approximately  25% of  his or  her  then-current vesting  credit. The
Compensation Committee took this action  to maintain morale across the  Company,
to  help  maintain  momentum  in  the development  projects  and  to  retain key
contributors in all areas of the Company, including the executive officers.
 
    As of  March  31, 1996,  490,905  shares of  Common  Stock had  been  issued
pursuant  to stock purchase rights or upon exercise of options granted under the
Option Program, options to purchase 875,683 shares of Common Stock at a weighted
average exercise price of  $3.29 per share were  outstanding and 183,412  shares
remained available for future option grants under the Program.
 
EMPLOYEE STOCK PURCHASE PLAN
 
    The Company's Employee Stock Purchase Plan (the "Purchase Plan") was adopted
by  the Board of Directors  and approved by the  Company's shareholders in April
1992. The Purchase Plan is intended to qualify under Section 423 of the Internal
Revenue Code of 1986, as amended. A total of 200,000 shares of Common Stock  has
been  reserved  for issuance  under  the Purchase  Plan.  The Purchase  Plan has
offering periods  of  approximately six  months,  commencing on  or  after  each
January  1 and  July 1.  The Purchase Plan  is administered  by the Compensation
Committee of  the  Board  of  Directors.  The  Purchase  Plan  permits  eligible
employees  to purchase  Common Stock through  payroll deductions,  which may not
exceed 15% of  an employee's compensation.  No employee may  purchase more  than
$25,000  worth of Common Stock  in any calendar year.  Employees are eligible to
participate if they are employed by the
 
                                       49
<PAGE>
Company or a subsidiary of the Company designated by the Board of Directors  for
at  least 20 hours per week and have  been so employed for more than five months
in a calendar year. The price of stock purchased under the Purchase Plan is  85%
of  the lower of (i) the fair market  value of the Common Stock at the beginning
of the offering period or (ii) the fair market value of the Common Stock at  the
end  of  the  offering period.  Employees  may  end their  participation  in the
offering at  any  time  during  the  offering  period,  and  participation  ends
automatically on termination of employment with the Company.
 
401(K) PLAN
 
    Effective  in September 1990, the Company adopted the Cholestech Corporation
Retirement Savings Plan (the "401(k)  Plan") that covers all eligible  employees
of the Company. During calendar 1995, an eligible employee could elect to defer,
in the form of contributions to the 401(k) Plan, between 1% and 15% of the total
compensation  that would otherwise be paid to the employee, not to exceed $9,240
per year  (adjusted for  cost-of-living increases).  During calendar  1996,  the
maximum  deferral election has increased to $9,500. Employees' contributions are
invested in selected equity mutual funds, a guaranteed interest contract account
or a  money  market fund  according  to the  directions  of the  employees.  The
contributions  are fully vested and nonforfeitable at all times. The 401(k) Plan
provides for employer  contributions as  determined by the  Board of  Directors.
Through March 31, 1996, the Company had not made any contributions to the 401(k)
Plan.
 
EMPLOYMENT AGREEMENTS
 
    Pursuant  to an employment  agreement with the Company  entered into in June
1993, Mr. Pinckert  was entitled  to receive an  initial annual  base salary  of
$160,000  for fiscal 1996  versus the $145,440 he  actually received. In October
1994 Mr. Pinckert  voluntarily reduced  his base salary  by 10%  to $144,000  in
order  to lower the operating  costs of the Company.  The Board of Directors has
approved a twelve-month wage and benefits continuation package for Mr.  Pinckert
in the event he is terminated from the Company.
 
    The   Board  of  Directors  has  approved  a  six-month  wage  and  benefits
continuation package  for  Mr.  Barbato and  Mr.  Janney  in the  event  of  the
involuntary  termination of their employment with  the Company. In addition, the
Board of Directors  has approved  a three-month wage  and benefits  continuation
package  for  Mr. Hewett  in the  event  of the  involuntary termination  of his
employment with the Company.
 
LIMITATIONS ON LIABILITY AND INDEMNIFICATION MATTERS
 
    The Company has adopted provisions in its Restated Articles of Incorporation
that eliminate  to  the fullest  extent  permissible under  California  law  the
liability  of its directors to the Company for monetary damages. Such limitation
of liability does  not affect  the availability  of equitable  remedies such  as
injunctive  relief or rescission. The Company's  Bylaws provide that the Company
shall indemnify its directors  and officers to the  fullest extent permitted  by
California law, including in circumstances in which indemnification is otherwise
discretionary under California law. The Company has entered into indemnification
agreements  with  its officers  and  directors containing  provisions  which may
require the Company, among other things, to indemnify the officers and directors
against certain liabilities that may arise by reason of their status or  service
as directors or officers (other than liabilities arising from willful misconduct
of a culpable nature), and to advance their expenses incurred as a result of any
proceeding against them as to which they could be indemnified.
 
    There is no currently pending litigation or proceeding involving a director,
officer,  employee or other agent of  the Company in which indemnification would
be required or permitted. The Company is not aware of any threatened  litigation
or proceeding which may result in a claim for such indemnification.
 
                                       50
<PAGE>
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
    In  April 1988, the Company granted a  loan to Mr. Hewett in connection with
his purchase of 35,640 shares of the Company's Common Stock pursuant to a  stock
purchase agreement. The loan was evidenced by a promissory note in the amount of
$35,640  due in April  1993, which bore interest  at the annual  rate of 8%. The
loan was secured in November 1989 by independent collateral. In September  1991,
the  Board of Directors approved the forgiveness of the loan in the event of the
involuntary termination of  Mr. Hewett's  employment with the  Company. In  June
1993,  the  Board  of Directors  approved  an  amendment to  the  loan agreement
providing for forgiveness of the principal loan balance in April 1995 as long as
Mr. Hewett  remained employed  by the  Company until  such time.  The  remaining
balance of the loan, $35,640, was forgiven in April 1995.
 
    In  April 1992,  the Company entered  into an employment  agreement with Mr.
Barbato providing  for  certain  relocation  benefits,  including  the  cost  of
alternative  housing for up  to six months  until his prior  residence was sold,
reimbursement of moving expenses  and closing costs upon  the sale of his  prior
residence,  and a bridge loan  to assist the purchase of  a new residence in the
event such purchase  occurred before the  sale of his  prior residence. In  July
1992,  Mr. Barbato executed a promissory note evidencing a $100,000 bridge loan.
This interest free promissory note was repaid  in full in October 1992. In  July
1992,  Mr. Barbato  borrowed $65,000 from  the Company pursuant  to a promissory
note. This promissory note bears  interest at a rate of  8.0% per annum and  was
due  September 1994. This promissory note  provided for quarterly forgiveness of
$8,125 of  the  outstanding  balance  and any  accrued  interest  as  additional
compensation as long as Mr. Barbato remained employed with the Company. The loan
was forgiven in full as of March 31, 1995.
 
    All  future  transactions,  including  loans, between  the  Company  and its
officers,  directors,  principal  shareholders  and  their  affiliates  will  be
approved  by a majority of  the Board of Directors,  including a majority of the
independent and disinterested outside  directors, and will be  on terms no  less
favorable to the Company than could be obtained from unaffiliated third parties.
 
                                       51
<PAGE>
                             PRINCIPAL SHAREHOLDERS
 
    The  following  table sets  forth certain  information  with respect  to the
beneficial ownership of the Common Stock as of March 31, 1996 and as adjusted to
reflect the  sale  of  the  3,000,000 shares  of  Common  Stock  offered  hereby
(assuming  no exercise of  the Underwriters over-allotment  option): (i) by each
Director, (ii)  by  each of  the  Named Executive  Officers,  and (iii)  by  all
Directors  and executive officers as  a group. The Company  does not know of any
person that is the beneficial owner of more than 5% of the outstanding shares of
Common Stock. Except  as otherwise noted,  the shareholders named  in the  table
have sole voting and investment power with respect to all shares of Common Stock
shown  as beneficially owned  by them, subject  to applicable community property
laws.
 
<TABLE>
<CAPTION>
                                                                                                PERCENTAGE BENEFICIALLY
                                                                                                        OWNED(2)
                                                                                   SHARES     ----------------------------
                                                                                 BENEFICIALLY    BEFORE          AFTER
BENEFICIAL OWNER(1)                                                               OWNED(2)      OFFERING       OFFERING
- -------------------------------------------------------------------------------  -----------  -------------  -------------
<S>                                                                              <C>          <C>            <C>
Warren E. Pinckert II (3)......................................................     277,838          3.4%           2.5%
Harvey S. Sadow, Ph.D. (4).....................................................      55,723         *              *
John L. Castello (5)...........................................................      27,500         *              *
Joseph Buchman (6).............................................................      17,500         *              *
H.R. Shepherd (7)..............................................................      17,500         *              *
Gary E. Hewett (8).............................................................     136,880          1.7            1.2
Linda H. Masterson (9).........................................................      49,602         *              *
Steve L. Barbato (10)..........................................................      32,562         *              *
                                                                                    626,135          7.6            5.4
All current Directors and executive officers as a group (9 persons) (11).......
</TABLE>
 
- --------------
     Less*than one percent.
 
       (1)
     The addresses of the persons set forth above is the address of the  Company
     appearing elsewhere in this Prospectus.
 
       (2)
     This  table is based  upon information supplied  by officers, directors and
     principal shareholders.  Applicable percentage  of  ownership is  based  on
     8,131,824  shares of Common Stock outstanding as of March 31, 1996 together
     with applicable  options  for  such shareholder.  Beneficial  ownership  is
     determined  in accordance  with the  rules of  the Securities  and Exchange
     Commission, and  includes  voting  and investment  power  with  respect  to
     shares.  Shares of  Common Stock subject  to options  or warrants currently
     exercisable or exercisable within 60 days  after March 31, 1996 are  deemed
     outstanding  for computing the  percentage ownership of  the person holding
     such options or warrants, but are not deemed outstanding for computing  the
     percentage of any other person.
 
       (3)
     Includes  196,221 shares of Common Stock issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
       (4)
     Includes 48,595 shares of Common  Stock issuable pursuant to stock  options
     exercisable within 60 days after March 31, 1996.
 
       (5)
     Represents 27,500 shares of Common Stock issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
       (6)
     Represents 17,500 shares of Common Stock issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
       (7)
     Represents 17,500 shares of Common Stock issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
       (8)
     Includes  81,874 shares of Common Stock  issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
       (9)
     Includes 41,875 shares of Common  Stock issuable pursuant to stock  options
     exercisable within 60 days after March 31, 1996.
 
      (10)
     Represents 32,562 shares of Common Stock issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
      (11)
     Includes  474,376 shares of Common Stock issuable pursuant to stock options
     exercisable within 60 days after March 31, 1996.
 
                                       52
<PAGE>
                          DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
    The Company's Restated Articles of Incorporation provide that the authorized
capital stock of the Company is 25,000,000 shares of Common Stock, no par value,
and 5,000,000 shares of undesignated Preferred Stock, no par value. As of  March
31, 1996, 8,131,824 shares of Common Stock and no shares of Preferred Stock were
outstanding.  As  of  May 7,  1996,  there were  308  holders of  record  of the
Company's Common Stock.
 
COMMON STOCK
 
    The issued and  outstanding shares of  Common Stock are,  and the shares  of
Common  Stock being offered by the Company hereby will be upon payment therefor,
validly issued, fully paid and nonassessable. Subject to the prior rights of the
holders of any  Preferred Stock,  the holders  of outstanding  shares of  Common
Stock are entitled to receive dividends out of assets legally available therefor
at  such times and  in such amounts as  the Board of Directors  may from time to
time  determine.  The  shares  of  Common  Stock  are  neither  redeemable   nor
convertible and the holders thereof have no preemptive or subscription rights to
purchase any securities of the Company. Upon liquidation, dissolution or winding
up  of the Company, the holders of Common Stock are entitled to receive pro rata
the assets of the  Company which are legally  available for distribution,  after
payment  of all debts and  other liabilities and subject  to the prior rights of
any holders  of Preferred  Stock  then outstanding.  Each outstanding  share  of
Common  Stock is  entitled to  one vote on  all matters  submitted to  a vote of
stockholders and have cumulative voting rights  with respect to the election  of
directors.
 
WARRANTS
 
    As  of  March  31, 1996,  there  were  outstanding warrants  to  purchase an
aggregate of 39,242 shares  of Common Stock  at an exercise  price of $3.50  per
share. Such warrants expire on July 15, 1999.
 
PREFERRED STOCK
 
    The  Company  is  authorized  to  issue  5,000,000  shares  of  undesignated
Preferred Stock. The Board of Directors has the authority to issue the Preferred
Stock in  one  or  more  series  and to  fix  the  price,  rights,  preferences,
privileges  and restrictions thereof, including dividend rights, dividend rates,
conversion rights,  voting  rights,  terms  of  redemption,  redemption  prices,
liquidation  preferences and the  number of shares constituting  a series or the
designation of such series, without any further vote or action by the  Company's
shareholders.  The  issuance  of  Preferred  Stock,  while  providing  desirable
flexibility  in  connection  with  possible  acquisitions  and  other  corporate
purposes, could have the effect of delaying, deferring or preventing a change in
control  of  the Company  without  further action  by  the shareholders  and may
adversely affect the market price  of, and the voting  and other rights of,  the
holders of Common Stock. The Company has no current plans to issue any shares of
Preferred Stock.
 
REGISTRATION RIGHTS
 
    Metra  Biosystems holds 39,526 shares of Common  Stock, and has the right to
purchase $750,000 of additional shares of Common Stock on achievement of certain
milestones by the Company, where the aggregate number of shares to be  purchased
is  determined by calculating a  weighted average based on  the five day trading
average before the  completion of the  milestone (collectively the  "Registrable
Securities").  Metra Biosystems or its transferees is entitled to certain rights
with respect  to the  registration  of such  shares  under the  Securities  Act.
Beginning  May 6, 1997, if the Company  proposes to register or Metra Biosystems
requests the registration  of any of  its securities under  the Securities  Act,
either  for  its own  account  or the  account  of other  securityholders, Metra
Biosystems is entitled to notice of such
 
                                       53
<PAGE>
registration  and  is  entitled  to  include  Registrable  Securities   therein,
provided,  among other conditions, that between May 6, 1997 and May 6, 1998, the
Company shall only be required to  include in such registration one-half of  the
Registrable  Securities. In addition, Metra  Biosystems may require the Company,
beginning May 6, 1997, on not more than two occasions in any 12 month period  to
file  a registration  statement on  Form S-3  under the  Securities Act,  at the
Company's expense,  with  respect to  all  of the  Registrable  Securities,  the
Company is required to use its best efforts to affect such registration, subject
to  certain conditions and  limitations. Further, in  the event Metra Biosystems
requests a registration on Form S-3 and the Company is not then entitled to  use
Form  S-3, then Metra Biosystems may require  the Company to file a registration
statement on Form  S-1 at  the Company's  expense, with  respect to  all of  the
Registrable  Securities.  The Company  is required  to use  its best  efforts to
effect such registration,  subject to  certain conditions  and limitations.  The
registration  rights of Metra Biosystems terminate  upon the earlier to occur of
May 6, 2001 or at such time as Metra Biosystems is able to dispose of all of the
Registrable Securities in one three-month period pursuant to provisions of  Rule
144.
 
TRANSFER AGENT
 
    The transfer agent for the Common Stock is Wells Fargo Bank, N.T.&N.A.
 
                                       54
<PAGE>
                                  UNDERWRITING
 
    Subject  to  the terms  and conditions  of  the Underwriting  Agreement, the
underwriters (the  "Underwriters")  named  below,  for  whom  Vector  Securities
International,  Inc.  and Principal  Financial  Securities, Inc.  are  acting as
representatives (the  "Representatives"),  have severally  agreed  to  purchase,
subject  to  the terms  and conditions  of the  Underwriting Agreement,  and the
Company has agreed to sell to the Underwriters, the following respective  number
of shares of Common Stock.
 
<TABLE>
<CAPTION>
UNDERWRITERS                                                                           NUMBER OF SHARES
- -------------------------------------------------------------------------------------  -----------------
<S>                                                                                    <C>
Vector Securities International, Inc.................................................
Principal Financial Securities, Inc..................................................
 
                                                                                             --------
  Total..............................................................................       3,000,000
                                                                                             --------
                                                                                             --------
</TABLE>
 
    The Underwriting Agreement provides that the obligations of the Underwriters
are  subject  to  certain conditions  precedent,  including the  absence  of any
material adverse change  in the Company's  business and the  receipt of  certain
certificates,  opinions and letters from the Company and its counsel. The nature
of the Underwriters' obligation is such that they are committed to purchase  all
shares of Common Stock offered hereby if any such shares are purchased.
 
    The Underwriters propose to offer the shares of Common Stock directly to the
public  at  the  public offering  price  set forth  on  the cover  page  of this
Prospectus, and to certain dealers at such price less a concession not in excess
of $    per share. The  Underwriters may allow, and such dealers may reallow,  a
concession  not in excess of $     per share to certain other dealers. After the
public offering of  the shares  of Common Stock,  the Offering  price and  other
selling terms may be changed by the Representatives.
 
    The  Company has granted  to the Underwriters an  option, exercisable at any
time during the 30-day period after the date of this Prospectus, to purchase  up
to an additional 450,000 shares of Common Stock at the public offering price set
forth  on the  cover page  of this  Prospectus, less  underwriting discounts and
commissions. The Underwriters may exercise such option solely for the purpose of
covering over allotments, if any, in connection with the Offering. To the extent
such option is exercised, each Underwriter will be obligated, subject to certain
conditions, to purchase  approximately the  same percentage  of such  additional
shares  as  the  number  of  shares  of Common  Stock  set  forth  next  to such
Underwriter's name in the  preceding table bears to  the total number of  shares
listed in the table.
 
    The  Offering of the shares is made for delivery when, as and if accepted by
the Underwriters and subject  to prior sale and  to withdrawal, cancellation  or
modification of this Offering without notice. The Underwriters reserve the right
to reject an order for the purchase of shares in whole or in part.
 
    The  Company  has  agreed  to  indemnify  the  Underwriters  against certain
liabilities, including liabilities under the  Securities Act, and to  contribute
to payments the Underwriters may be required to make in respect thereof.
 
    The  executive  officers, directors  and certain  other stockholders  of the
Company have agreed  that they will  not, without the  prior written consent  of
Vector  Securities International, Inc., offer, sell  or otherwise dispose of any
shares of Common Stock, options or warrants to acquire shares of Common Stock or
securities exchangeable for or convertible into shares of Common Stock owned  by
them  for a period of 90 days after the date of this Prospectus. The Company has
agreed that it will not, without the prior written consent of Vector  Securities
International,  Inc., offer, sell  or otherwise dispose of  any shares of Common
Stock, options  or warrants  to acquire  shares of  Common Stock  or  securities
exchangeable  for or convertible into shares of  Common Stock for a period of 90
days after  the date  of this  Prospectus,  except that  the Company  may  grant
additional  options  under its  stock  option plans,  or  issue shares  upon the
exercise of outstanding stock options or warrants.
 
    In connection  with the  Offering, certain  Underwriters and  selling  group
members  (if  any) who  are qualifying  registered market  makers on  the Nasdaq
National Market may engage in passive market-
 
                                       55
<PAGE>
making transactions  in  the Common  Stock  on  the Nasdaq  National  Market  in
accordance with Rule 10b-6A under the Securities Exchange Act of 1934 during the
two  business  day period  before  commencement of  sales  in the  Offering. The
passive market making transactions must comply with applicable volume and  price
limits and be identified as such. In general, a passive market maker may display
its  bid  at a  price  not in  excess  of the  highest  independent bid  for the
security. If all independent bids are  lowered below the passive market  maker's
bid,  however, such bid  must then be  lowered when certain  purchase limits are
exceeded. Net purchases  by a  passive market maker  on each  day are  generally
limited  to a  specified percentage of  the passive market  making average daily
trading  volume  in  the  Common  Stock  during  a  price  period  and  must  be
discontinued when such limit is reached. Passive market making may stabilize the
market  price of the  Common Stock at  a level above  that which might otherwise
prevail, and, if commenced, may be discontinued at any time.
 
                                 LEGAL MATTERS
 
    The validity of  the shares of  Common Stock offered  hereby will be  passed
upon  for the  Company by  Wilson Sonsini  Goodrich &  Rosati, P.C.,  Palo Alto,
California. Certain legal matters in connection with the Offering will be passed
upon for the  Underwriters by  Skadden, Arps,  Slate, Meagher  & Flom,  Chicago,
Illinois.
 
                                    EXPERTS
 
    The  balance sheets  as of  March 31,  1995 and  1996 and  the statements of
operations, shareholders' equity and cash flows  for each of the three years  in
the period ended March 31, 1996 and the financial statement schedule included in
this  Prospectus  and  elsewhere in  the  Registration Statement,  have  been so
included in this Prospectus and in the Registration Statement in reliance on the
report of Price Waterhouse LLP, independent accountants, given on the  authority
of said firm as experts in auditing and accounting.
 
    The  statements  in  this Prospectus  under  the captions  "Risk  Factors --
Uncertainty  of  Patent  and  Propriertary  Technology  Protection;  License  of
Technology   of  Third  Parties"  and   "Business  --  Patents  and  Proprietary
Technology" have been reviewed  and approved by  Dehlinger & Associates,  patent
counsel  for the Company, as experts on such matters, and are included herein in
reliance upon that review and approval.
 
                             ADDITIONAL INFORMATION
 
    The Company is subject to  the informational requirements of the  Securities
Exchange  Act of  1934, as amended,  and in accordance  therewith files reports,
proxy  statements  and  other  information  with  the  Securities  and  Exchange
Commission   (the  "Commission").  Such  reports,  proxy  statements  and  other
information can be inspected and copied  at the Public Reference Section of  the
Commission  at Room 1024,  450 Fifth Street,  N.W., Judiciary Plaza, Washington,
D.C. 20549,  and at  the Commission's  following Regional  Offices: Suite  1400,
Northwest  Atrium Center, 500 West Madison  Street, Chicago, Illinois 60661; and
13th Floor, Seven World Trade Center, New  York, New York 10048. Copies of  such
material  can be obtained at prescribed  rates from the Public Reference Section
of the Commission at 450 Fifth  Street, N.W., Judiciary Plaza, Washington,  D.C.
20549.
 
    The  Company has filed with the  Commission a Registration Statement on Form
S-1 under the Securities Act  of 1933 with respect  to the Common Stock  offered
hereby. This Prospectus does not contain all of the information set forth in the
Registration  Statement  and the  exhibits  and schedules  thereto.  For further
information with respect to the Company and such Common Stock, reference is made
to the Registration  Statement and the  exhibits and schedules  filed as a  part
thereof.  Statements  contained in  this Prospectus  as to  the contents  of any
contract or any other document referred to are not necessarily complete. In each
instance, reference is made to the copy of such contract or document filed as an
exhibit to the Registration Statement, and  each such statement is qualified  in
all  respects by such reference. Copies of the Registration Statement, including
exhibits  and  schedules  thereto,  may  be  inspected  without  charge  at  the
Commission's  principal office  in Washington,  D.C., or  obtained at prescribed
rates from the Public Reference Section  of the Commission at 450 Fifth  Street,
N.W., Judiciary Plaza, Washington, D.C. 20549.
 
                                       56
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
Report of Independent Accountants..........................................................................        F-2
Balance Sheets.............................................................................................        F-3
Statements of Operations...................................................................................        F-4
Statement of Changes in Shareholders' Equity...............................................................        F-5
Statements of Cash Flows...................................................................................        F-6
Notes to Financial Statements..............................................................................        F-7
</TABLE>
 
                                      F-1
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and
Shareholders of Cholestech Corporation
 
In  our opinion, the  accompanying balance sheets and  the related statements of
operations, of changes in shareholders' equity and of cash flows present fairly,
in all material respects,  the financial position  of Cholestech Corporation  at
March  31, 1995 and  March 29, 1996, and  the results of  its operations and its
cash flows for each of  the three years in the  period ended March 29, 1996,  in
conformity  with  generally  accepted  accounting  principles.  These  financial
statements  are   the   responsibility   of  the   Company's   management;   our
responsibility  is to express an opinion  on these financial statements based on
our audits.  We conducted  our audits  of these  statements in  accordance  with
generally accepted auditing standards which require that we plan and perform the
audit  to obtain reasonable assurance about whether the financial statements are
free of material  misstatement. An audit  includes examining, on  a test  basis,
evidence  supporting the  amounts and  disclosures in  the financial statements,
assessing the  accounting  principles used  and  significant estimates  made  by
management,  and  evaluating the  overall  financial statement  presentation. We
believe that our  audits provide a  reasonable basis for  the opinion  expressed
above.
 
PRICE WATERHOUSE LLP
 
San Jose, California
April 24, 1996, except as to Note 11,
which is as of May 9, 1996
 
                                      F-2
<PAGE>
                             CHOLESTECH CORPORATION
                                 BALANCE SHEETS
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                    MARCH 31, 1995  MARCH 29, 1996
                                                                                    --------------  --------------
<S>                                                                                 <C>             <C>
Current assets:
  Cash and cash equivalents.......................................................  $    1,230,000  $      361,000
  Marketable securities...........................................................       4,000,000              --
  Restricted marketable securities................................................              --       3,750,000
  Accounts receivable.............................................................         664,000       1,107,000
  Inventories.....................................................................       1,351,000       1,910,000
  Prepaid expenses and other assets...............................................         168,000         167,000
                                                                                    --------------  --------------
    Total current assets..........................................................       7,413,000       7,295,000
Property and equipment, net.......................................................       2,182,000       2,041,000
Other assets, net.................................................................         446,000         309,000
                                                                                    --------------  --------------
                                                                                    $   10,041,000  $    9,645,000
                                                                                    --------------  --------------
                                                                                    --------------  --------------
 
                                       LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
  Short-term bank borrowings......................................................  $           --  $      250,000
  Accounts payable and accrued expenses...........................................         893,000       1,614,000
  Accrued payroll and benefits....................................................         304,000         253,000
  Product warranty................................................................         150,000         187,000
  Current portion of long-term debt...............................................              --         499,000
  Other liabilities...............................................................         137,000          50,000
                                                                                    --------------  --------------
    Total current liabilities.....................................................       1,484,000       2,853,000
Long-term debt, less current portion..............................................              --         799,000
Other liabilities.................................................................          44,000          11,000
                                                                                    --------------  --------------
    Total liabilities.............................................................       1,528,000       3,663,000
                                                                                    --------------  --------------
Commitments (Notes 5 and 6).......................................................
Shareholders' equity:
  Preferred Stock, no par value; 5,000,000 shares authorized;
   no shares issued and outstanding...............................................              --              --
  Common Stock, no par value; 25,000,000 shares authorized;
   7,999,962 and 8,131,824 shares issued and outstanding..........................      55,465,000      55,644,000
  Note receivable from issuance of Common Stock...................................         (36,000)             --
  Accumulated deficit.............................................................     (46,916,000)    (49,662,000)
                                                                                    --------------  --------------
    Total shareholders' equity....................................................       8,513,000       5,982,000
                                                                                    --------------  --------------
                                                                                    $   10,041,000  $    9,645,000
                                                                                    --------------  --------------
                                                                                    --------------  --------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-3
<PAGE>
                             CHOLESTECH CORPORATION
                            STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                         YEAR ENDED    YEAR ENDED    YEAR ENDED
                                                                         MARCH 25,     MARCH 31,     MARCH 29,
                                                                            1994          1995          1996
                                                                        ------------  ------------  ------------
<S>                                                                     <C>           <C>           <C>
Revenues:
  Domestic............................................................  $  1,844,000  $  3,221,000  $  5,548,000
  International.......................................................     1,185,000       817,000     1,325,000
                                                                        ------------  ------------  ------------
                                                                           3,029,000     4,038,000     6,873,000
Cost of products sold.................................................     4,972,000     3,933,000     4,505,000
                                                                        ------------  ------------  ------------
Gross profit (loss)...................................................    (1,943,000)      105,000     2,368,000
                                                                        ------------  ------------  ------------
Operating expenses:
  Research and development............................................     2,134,000       715,000       714,000
  Sales and marketing.................................................     2,909,000     2,694,000     3,168,000
  General and administrative..........................................     2,288,000     1,983,000     1,376,000
                                                                        ------------  ------------  ------------
    Total operating expenses..........................................     7,331,000     5,392,000     5,258,000
                                                                        ------------  ------------  ------------
Loss from operations..................................................    (9,274,000)   (5,287,000)   (2,890,000)
Interest income.......................................................       447,000       278,000       284,000
Interest expense......................................................       (83,000)      (35,000)     (140,000)
                                                                        ------------  ------------  ------------
Net loss..............................................................  $ (8,910,000) $ (5,044,000) $ (2,746,000)
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
Net loss per share....................................................  $      (1.14) $       (.63) $       (.34)
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
Weighted average common shares........................................     7,790,684     7,954,284     8,041,531
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
</TABLE>
 
                 See accompanying notes to financial statements
 
                                      F-4
<PAGE>
                             CHOLESTECH CORPORATION
                  STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
                                   PREFERRED STOCK          COMMON STOCK
                                ----------------------  ---------------------     NOTE      ACCUMULATED
                                 SHARES      AMOUNT      SHARES      AMOUNT    RECEIVABLE     DEFICIT       TOTAL
                                ---------  -----------  ---------  ----------  -----------  ------------  ----------
<S>                             <C>        <C>          <C>        <C>         <C>          <C>           <C>
Balance at March 26, 1993.....         --   $      --   7,648,471  $54,991,000  $ (36,000)  ($32,962,000) $21,993,000
Issuance of Common Stock......                            262,141     226,000                                226,000
Compensation expense relating
 to stock options.............                                        104,000                                104,000
Net loss......................                                                               (8,910,000)  (8,910,000)
                                ---------  -----------  ---------  ----------  -----------  ------------  ----------
Balance at March 25, 1994.....         --          --   7,910,612  55,321,000     (36,000)  (41,872,000)  13,413,000
Issuance of Common Stock......                             89,350      72,000                                 72,000
Compensation expense relating
 to stock options.............                                         72,000                                 72,000
Net loss......................                                                               (5,044,000)  (5,044,000)
                                ---------  -----------  ---------  ----------  -----------  ------------  ----------
Balance at March 31, 1995.....         --          --   7,999,962  55,465,000     (36,000)  (46,916,000)   8,513,000
Issuance of Common Stock......                            131,862     140,000                                140,000
Compensation expense relating
 to stock options.............                                         39,000                                 39,000
Foregiveness of loan..........                                                     36,000                     36,000
Net loss......................                                                               (2,746,000)  (2,746,000)
                                ---------  -----------  ---------  ----------  -----------  ------------  ----------
Balance at March 29, 1996.....         --   $      --   8,131,824  $55,644,000  $      --   ($49,662,000) $5,982,000
                                ---------  -----------  ---------  ----------  -----------  ------------  ----------
                                ---------  -----------  ---------  ----------  -----------  ------------  ----------
</TABLE>
 
                 See accompanying notes to financial statements
 
                                      F-5
<PAGE>
                             CHOLESTECH CORPORATION
                            STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                         YEAR ENDED    YEAR ENDED    YEAR ENDED
                                                                         MARCH 25,     MARCH 31,     MARCH 29,
                                                                            1994          1995          1996
                                                                        ------------  ------------  ------------
<S>                                                                     <C>           <C>           <C>
Cash flows from operating activities:
  Net loss............................................................  $ (8,910,000) $ (5,044,000) $ (2,746,000)
  Adjustments to reconcile net loss to net cash used in operating
   activities:
    Depreciation and amortization.....................................     1,098,000       729,000       612,000
    Deferred revenue..................................................      (215,000)      (74,000)      (30,000)
    Compensation expense relating to stock options issued below
     market...........................................................       104,000        72,000        39,000
    Forgiveness of note receivable....................................            --            --        36,000
    Write-off of property and equipment...............................       231,000         2,000         3,000
    Changes in assets and liabilities:
      Accounts receivable.............................................       357,000      (283,000)     (443,000)
      Inventories.....................................................       (31,000)      103,000      (559,000)
      Prepaid expenses and other assets...............................       331,000         2,000         1,000
      Other assets....................................................       153,000        (8,000)       (6,000)
      Accounts payable and accrued expenses...........................      (218,000)     (115,000)      721,000
      Accrued license fee.............................................      (290,000)           --            --
      Accrued payroll and benefits....................................       429,000      (391,000)      (51,000)
      Product warranty................................................      (110,000)           --        37,000
      Other liabilities...............................................      (100,000)           --            --
                                                                        ------------  ------------  ------------
    Net cash used in operating activities.............................    (7,171,000)   (5,007,000)   (2,386,000)
                                                                        ------------  ------------  ------------
Cash flows from investing activities:
  Sales (proceeds) of marketable securities, net......................       436,000     5,630,000       250,000
  Purchases of property and equipment.................................      (657,000)     (625,000)     (331,000)
                                                                        ------------  ------------  ------------
    Net cash provided by (used in) investing activities...............      (221,000)    5,005,000       (81,000)
                                                                        ------------  ------------  ------------
Cash flows from financing activities:
  Proceeds from long-term debt........................................            --            --     1,500,000
  Principal payments on long-term debt................................            --            --      (202,000)
  Proceeds from short-term bank borrowing.............................            --            --       250,000
  Principal payments on capital leases................................      (685,000)     (268,000)      (90,000)
  Restricted cash investment..........................................       380,000            --            --
  Issuance of Common Stock............................................       226,000        72,000       140,000
                                                                        ------------  ------------  ------------
    Net cash (used in) provided by financing activities...............       (79,000)     (196,000)    1,598,000
                                                                        ------------  ------------  ------------
Net change in cash and cash equivalents...............................    (7,471,000)     (198,000)      869,000
Cash and cash equivalents at beginning of period......................     8,899,000     1,428,000     1,230,000
                                                                        ------------  ------------  ------------
Cash and cash equivalents at end of period............................  $  1,428,000  $  1,230,000  $    361,000
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
Supplemental disclosures of cash flow information:
  Cash paid during the year for interest..............................  $     83,000  $     35,000  $    140,000
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
Supplemental disclosures of non-cash financing and investing
 activities:
  Capital lease obligations incurred for acquisition of property and
   equipment..........................................................  $     53,000  $    105,000  $         --
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
  Reclassification of $3,750,000 in marketable securities to
   restricted marketable securities in connection with a line of
   credit.
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-6
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
1.  OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
OPERATIONS
 
    Cholestech  Corporation (the "Company") was incorporated February 2, 1988 to
develop, manufacture and  sell point-of-care systems  which can perform  various
diagnostic tests using a single drop of whole blood.
 
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
FISCAL YEAR END
 
    The  Company's fiscal year is a 52-53  week period ending on the last Friday
in March. Fiscal  1994, 1995  and 1996  comprised 52,  53 and  52 week  periods,
respectively.
 
REVENUE RECOGNITION
 
    All  revenues from  product sales  are recognized  at the  time products are
shipped and are denominated in U.S. dollars. The Company also provides an amount
for estimated sales returns.
 
CASH AND CASH EQUIVALENTS AND MARKETABLE SECURITIES
 
    The Company considers all highly liquid investments with a maturity of three
months or less at the date of purchase to be cash equivalents; investments  with
maturities  between  three  and  twelve  months  are  classified  as  short-term
marketable securities and investments with maturities which exceed twelve months
are classified as long-term marketable  securities. The Company has  established
policies  which limit  the type,  credit quality and  length of  maturity of the
securities in  which  it invests.  The  Company's investment  policy  allows  no
investments   in  any  single  private  issuer  to  exceed  $1,000,000  and  the
investments must have, at a minimum, a credit rating of AA. Cash equivalents and
restricted marketable  securities  at  March 29,  1996  consist  principally  of
investments  in money-market funds, commercial  paper and U.S. government-agency
obligations and  are classified  as available  for sale.  Restricted  marketable
securities  are carried at amortized cost, which approximates market. Unrealized
gains and losses are immaterial.
 
CONCENTRATION OF CREDIT RISK
 
    Financial instruments which potentially expose the Company to concentrations
of credit risk include trade accounts receivable; however, this risk is  limited
due  to the  large number of  individually smaller customers.  Collateral is not
required on these  transactions. The  Company maintains  reserves for  potential
credit  losses and such  losses, in the aggregate,  have not exceeded management
expectations.
 
INVENTORIES
 
    Inventories are stated at the lower of cost or market, cost being determined
using the first-in,  first-out (FIFO)  method. Cost  includes direct  materials,
direct labor and manufacturing overhead.
 
PROPERTY AND EQUIPMENT
 
    Property  and equipment are  stated at cost.  Depreciation is computed using
the straight-line method over the estimated  useful lives of the related  assets
which  range from two  to five years. Leasehold  improvements are amortized over
their estimated useful lives, not to exceed  the term of the related lease.  The
cost  of additions and improvements is capitalized while maintenance and repairs
are charged to expense as incurred.
 
WARRANTIES
 
    The Company's  products  are generally  under  warranty against  defects  in
material  and workmanship  for a  period of  one year.  The Company  accrues for
estimated future warranty costs at the time of sale.
 
                                      F-7
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
1.  OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
INCOME TAXES
 
    The Company uses  the asset and  liability method of  accounting for  income
taxes, which requires the recognition of deferred tax liabilities and assets for
the  expected  future  tax  consequences of  temporary  differences  between the
financial reporting and income tax bases of assets and liabilities.
 
NET LOSS PER SHARE
 
    Net loss per  share is computed  by dividing  the net loss  by the  weighted
average  number of common  and common equivalent  shares outstanding during each
period. Common equivalent shares are included in determining net loss per share,
to the extent they are dilutive, using the treasury stock method.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    The carrying  value  of cash  equivalents,  short-term bank  borrowings  and
current  portion  of long-term  debt  approximate fair  value  due to  the short
maturity of those instruments.
 
    The fair  value of  the  Company's long-term  debt, which  approximates  its
carrying  value, is estimated based on the  quoted market prices for the same or
similar issues  or on  the current  rates offered  to the  Company for  debt  of
similar maturities.
 
USE OF ESTIMATES
 
    The  preparation  of  financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect the  reported amounts  of  assets and  liabilities and
disclosure of contingent  assets and liabilities  at the date  of the  financial
statements and the reported amounts of revenue and expenses during the reporting
period. Actual results could differ from those estimates.
 
IMPACT OF ADOPTION OF NEW ACCOUNTING STANDARDS
 
    In  March 1995, the Financial Accounting Standards Board issued Statement of
Financial Accounting  Standards  No.  121  "Accounting  for  the  Impairment  of
Long-Lived Assets and for Long-Lived Assets to Be Disposed Of" ("FAS 121") which
requires  the Company  to review  for impairment  of long-lived  assets, certain
identifiable intangibles and goodwill related to those assets whenever events or
changes in circumstances indicate that the carrying amount of an asset might not
be recoverable. In certain situations,  an impairment loss would be  recognized.
The  Company will  adopt FAS 121  during fiscal  1997 and, based  on its initial
evaluation, does  not expect  its adoption  to  have a  material impact  on  the
Company's financial condition or results of operations.
 
    In  October 1995, the Financial  Accounting Standards Board issued Statement
of  Financial  Accounting   Standards  No.  123   "Accounting  for   Stock-Based
Compensation"  ("FAS  123")  which  established a  fair  value  based  method of
accounting  for   stock-based  compensation   plans  and   requires   additional
disclosures  for  those companies  who  elect not  to  adopt the  new  method of
accounting. The  Company will  adopt FAS  123 during  fiscal 1997.  The  Company
intends  to continue to  account for employee stock  options using the intrinsic
value method prescribed by APB Opinion No. 25 and to adopt the "disclosure only"
pro forma alternative described in FAS 123.
 
                                      F-8
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
2.  BALANCE SHEET COMPOSITION
    Accounts receivable consist of:
 
<TABLE>
<CAPTION>
                                                               MARCH 31, 1995  MARCH 29, 1996
                                                               --------------  --------------
<S>                                                            <C>             <C>
Accounts receivable..........................................   $    689,000    $ $1,189,000
Less allowance for doubtful accounts and sales returns.......        (25,000)        (82,000)
                                                               --------------  --------------
                                                                $    664,000    $  1,107,000
                                                               --------------  --------------
                                                               --------------  --------------
</TABLE>
 
    Inventories consist of:
 
<TABLE>
<CAPTION>
                                                               MARCH 31, 1995  MARCH 29, 1996
                                                               --------------  --------------
<S>                                                            <C>             <C>
Raw materials................................................   $    854,000    $    875,000
Work-in-process..............................................        167,000         380,000
Finished goods...............................................        330,000         655,000
                                                               --------------  --------------
                                                                $  1,351,000    $  1,910,000
                                                               --------------  --------------
                                                               --------------  --------------
</TABLE>
 
    Property and equipment consist of:
 
<TABLE>
<CAPTION>
                                                               MARCH 31, 1995  MARCH 29, 1996
                                                               --------------  --------------
<S>                                                            <C>             <C>
Machinery and equipment......................................   $  4,137,000    $  4,322,000
Furniture and fixtures.......................................        276,000         280,000
Computer equipment...........................................        833,000         866,000
Leasehold improvements.......................................        203,000         215,000
Construction-in-progress.....................................         41,000         131,000
                                                               --------------  --------------
                                                                   5,490,000       5,814,000
Less accumulated depreciation and amortization...............     (3,308,000)     (3,773,000)
                                                               --------------  --------------
                                                                $  2,182,000    $  2,041,000
                                                               --------------  --------------
                                                               --------------  --------------
</TABLE>
 
Property and equipment  include assets  under capital leases  of $1,116,000  and
$841,000  and accumulated depreciation  of $1,011,000 and  $802,000 at March 31,
1995 and March 29, 1996, respectively.
 
3.  SHORT-TERM BANK BORROWING
    In December 1993, the Company entered into an agreement with a bank for a $3
million revolving line of credit. While the agreement is in effect, the  Company
is  required  to maintain  on  deposit with  the  bank $3,750,000  of marketable
securities as pledged collateral, restricted as to use when the Company has  any
outstanding  borrowings  under  the agreement.  The  Company has  the  option of
selecting an interest rate on borrowings under the agreement based on the bank's
reference rate,  LIBOR or  the  bank's short-term  certificate-of-deposit  rates
(ranging  from 5.5% to 9.0%). The Company  is not required to pay any commitment
fees on the unused available credit. The agreement expires on October 31,  1996.
As of March 29, 1996, there was $250,000 outstanding under the agreement.
 
                                      F-9
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
4.  LONG-TERM DEBT
    Long-term debt consists of:
 
<TABLE>
<CAPTION>
                                                                                   MARCH 29,
                                                                                      1996
                                                                                  ------------
<S>                                                                               <C>
Note payable, bearing interest at 16%, with monthly installments of $53,000, and
 secured by fixed assets, inventory and a portion of accounts receivable........  $  1,298,000
Less current portion............................................................      (499,000)
                                                                                  ------------
Long-term portion...............................................................  $    799,000
                                                                                  ------------
                                                                                  ------------
</TABLE>
 
    The  note  contains various  provisions  including requirements  to maintain
$3,000,000  or  more  in  cash,  cash  equivalents  and  restricted   marketable
securities,  net  of  all  non-subordinated  debt  outstanding,  and  maintain a
security deposit in the amount of $150,000 payable to the lender in the event of
a default  on  the  note.  If  the  Company's  cash  and  restricted  marketable
securities  were  to fall  below $3,000,000,  the Company  would be  required to
deposit with the lender an additional $200,000 as a security deposit.
 
    Annual maturities under the note are as follows:
 
<TABLE>
<CAPTION>
FISCAL YEAR
- --------------------------------------------------------------------------------
<S>                                                                               <C>
1997............................................................................  $    499,000
1998............................................................................       496,000
1999............................................................................       303,000
                                                                                  ------------
    Total.......................................................................  $  1,298,000
                                                                                  ------------
                                                                                  ------------
</TABLE>
 
5.  LEASES
    The Company leases office and  laboratory facilities under a  noncancellable
operating  lease which expires  in 2000. The lease  provides for renewal options
and options for expansion or reduction of the initial rental space. Rent expense
was  $300,000,  $300,000,  and  $195,000   for  fiscal  1994,  1995  and   1996,
respectively.
 
    The  Company also leases equipment and  furniture under capital leases which
contain renewal options and/or options  to purchase the equipment and  furniture
at fair market value.
 
    Future  minimum payments required under capital and noncancellable operating
leases at March 29, 1996 are:
 
<TABLE>
<CAPTION>
                                                              CAPITAL   OPERATING
FISCAL YEAR                                                   LEASES      LEASES      TOTAL
- -----------------------------------------------------------  ---------  ----------  ----------
<S>                                                          <C>        <C>         <C>
1997.......................................................  $  35,000  $  195,000  $  230,000
1998.......................................................      7,000     200,000     207,000
1999.......................................................      5,000     205,000     210,000
2000.......................................................         --     205,000     205,000
                                                             ---------  ----------  ----------
Total minimum lease payments...............................     47,000  $  805,000  $  852,000
                                                                        ----------  ----------
                                                                        ----------  ----------
 
Imputed interest...........................................     (3,000)
                                                             ---------
Present value of net minimum lease payments................     44,000
Current portion of capital lease obligations...............    (33,000)
                                                             ---------
Capital lease obligations, less current portion............  $  11,000
                                                             ---------
                                                             ---------
</TABLE>
 
                                      F-10
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
6.  COMMITMENTS
    The Company has obtained rights to use certain technology in the manufacture
of certain of its  products. The related agreements  provide for the Company  to
pay  royalties ranging from 0.6% to 6%  of net sales of the applicable products.
Total royalty expense for fiscal 1994, 1995 and 1996 was $140,000, $132,000  and
$381,000, respectively.
 
7.  SHAREHOLDERS' EQUITY
PREFERRED STOCK
 
    The  Company  is  authorized  to  issue  5,000,000  shares  of  undesignated
Preferred Stock. The Board of Directors has the authority to issue the Preferred
Stock in  one  or  more  series  and to  fix  the  price,  rights,  preferences,
privileges  and restrictions thereof, including dividend rights, dividend rates,
conversion rights,  voting  rights,  terms  of  redemption,  redemption  prices,
liquidation  preferences and the  number of shares constituting  a series or the
designation of such series, without any further vote or action by the  Company's
shareholders.
 
WARRANTS
 
    At  March 29, 1996,  there were warrants  for 39,242 shares  of Common Stock
outstanding at an exercise price  of $3.50 per share,  which expire on July  15,
1999.
 
EMPLOYEE STOCK PURCHASE PLAN
 
    In  April 1992,  the Company adopted  the Employee Stock  Purchase Plan (the
"Plan") which reserved 75,000 shares of Common Stock to be issued in  accordance
with  the Internal Revenue Code under such  terms as approved by the officers of
the Company. In fiscal 1996, 32,177  shares and 18,637 shares were purchased  by
employees  at prices of $1.59 and $2.01 per share, respectively. In August 1995,
the shareholders  approved an  increase in  the number  of shares  reserved  for
issuance under the Plan from 75,000 to 200,000.
 
STOCK INCENTIVE PROGRAM
 
    The  Board  of  Directors  adopted the  1988  Stock  Incentive  Program (the
"Program") which provides that incentive  stock options (ISOs) and  nonqualified
stock  options (NSOs) for shares of Common Stock may be granted to employees and
consultants of the Company. In accordance with the Program, the stated  exercise
price  shall not be  less than 100% and  85% of the fair  market value of Common
Stock on the date of grant for ISOs and NSOs, respectively. The Program provides
that the options shall be exercisable over a period not to exceed five years and
a day and shall vest at a rate of at least 25 percent each year over a four year
period. Vesting may  be accelerated  upon the  occurrence of  certain events  as
described  in  the  stock option  agreement.  In August  1995,  the shareholders
approved an  increase in  the number  of  shares of  Common Stock  reserved  for
issuance under the Program from 1,300,000 to 1,550,000.
 
    As a result of the Company's initial public offering of Common Stock in June
1992,  options issued in November 1991 were determined to have been issued at an
amount less than the fair market value of the Company's Common Stock at the date
the options were granted. The difference  between the option price and the  fair
market  value  of  the  Company's  Common  Stock  was  determined  to  contain a
compensatory  element.  The  compensatory  element  resulted  in  a  charge   to
operations  in  fiscal 1994,  1995 and  1996 of  $104,000, $72,000  and $39,000,
respectively.
 
    In August 1994, the  Company's Board of Directors  approved a plan to  offer
all  current employees and  consultants holding outstanding  options to purchase
Common Stock of the Company  with exercise prices in  excess of $3.50 per  share
the  opportunity to exchange such options for options priced at $3.50 per share.
In exchange  for  the  new  options, the  employees  and  consultants  forfeited
approximately  25 percent of their vesting credit.  At the time of the approval,
the fair market value of the Company's Common Stock was $2.50 per share.
 
                                      F-11
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
7.  SHAREHOLDERS' EQUITY (CONTINUED)
    Stock option activity under the Program is as follows:
 
<TABLE>
<CAPTION>
                                                                  OUTSTANDING   EXERCISE PRICE
                                                                    OPTIONS       PER SHARE
                                                                  ------------  --------------
<S>                                                               <C>           <C>
Balance, March 26, 1993.........................................      943,411   $   .20-$15.25
  Granted.......................................................      290,652   $  5.25-$ 7.13
  Exercised.....................................................     (237,234)  $   .20-$ 5.00
  Cancelled.....................................................     (221,526)  $   .20-$13.50
                                                                  ------------
Balance, March 25, 1994.........................................      775,303   $   .20-$15.25
  Granted.......................................................      860,381   $  1.75-$ 3.50
  Exercised.....................................................      (47,161)  $   .20-$ 5.00
  Cancelled.....................................................     (709,495)  $   .20-$15.25
                                                                  ------------
Balance, March 31, 1995.........................................      879,028   $   .20-$10.50
  Granted.......................................................      212,923   $  1.75-$ 6.56
  Exercised.....................................................      (79,885)  $   .20-$ 3.50
  Cancelled.....................................................     (136,383)  $   .20-$ 3.50
                                                                  ------------
Balance, March 29, 1996.........................................      875,683   $   .20-$10.50
                                                                  ------------
                                                                  ------------
</TABLE>
 
    As of  March 29,  1996, options  for  518,244 shares  of Common  Stock  were
exercisable.
 
8.  INCOME TAXES
    Deferred tax assets (liabilities) consist of the following:
 
<TABLE>
<CAPTION>
                                                                  MARCH 31,       MARCH 29,
                                                                     1995            1996
                                                                --------------  --------------
<S>                                                             <C>             <C>
Net deferred tax assets:
  Net operating loss carryforwards............................  $   16,417,000  $   17,611,000
  Research and development tax credit
   carryforwards..............................................       1,881,000       1,963,000
  Capitalized research and development........................         456,000         487,000
  Other.......................................................         300,000        (756,000)
  Valuation allowance for deferred tax assets.................     (19,054,000)    (19,305,000)
                                                                --------------  --------------
                                                                $           --  $           --
                                                                --------------  --------------
                                                                --------------  --------------
</TABLE>
 
    The Company has net operating loss carryforwards available to reduce taxable
income  through 2011 for federal and  state income tax purposes of approximately
$46,044,000  and  $21,035,000,  respectively.  Additionally,  the  Company   has
research  and development credit carryforwards available to reduce taxes payable
through 2011  for  federal  and  state  income  tax  purposes  of  approximately
$1,470,000 and $493,000, respectively.
 
    As  a result of the Series C Preferred Stock offerings in May 1990, there is
an annual limitation of  approximately $1,500,000 for  federal and state  income
tax  purposes  on the  use  of approximately  $8,100,000  and $1,080,000  of net
operating losses,  and of  $390,000 and  $160,000 of  tax credit  carryforwards,
respectively.  Additionally, as a result of  the Company's secondary offering in
December 1992, the Company's net  operating losses and tax credit  carryforwards
incurred  prior  to  December  1992  are  subject  to  an  annual  limitation of
approximately $5,450,000 for federal and state income tax reporting purposes  on
the  use  of  approximately $28,176,000  and  $8,099,000 of  net  operating loss
carryforwards,
 
                                      F-12
<PAGE>
                             CHOLESTECH CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
 
8.  INCOME TAXES (CONTINUED)
respectively, and  of  $1,151,000  and $379,000  of  tax  credit  carryforwards,
respectively.  If the amount of these limitations  are not utilized in any year,
the amount not utilized increases the allowable limit in the subsequent year.
 
9.  RETIREMENT SAVINGS PLAN
    Effective in September 1990, the Company adopted the Cholestech  Corporation
Retirement  Savings Plan  (the "401(k) Plan")  that covers all  employees of the
Company. An eligible employee may elect  to defer, in the form of  contributions
to  the 401(k)  Plan, between 1%  and 15%  of the total  compensation that would
otherwise be paid to the employee, not  to exceed $9,240 per year (adjusted  for
cost-of-living  increases).  Employee  contributions  are  invested  in selected
mutual funds or a money market fund according to the directions of the employee.
The contributions are fully vested and  nonforfeitable at all times. The  401(k)
Plan  provides  for  employer  contributions  as  determined  by  the  Board  of
Directors. The Company has not made any contributions through fiscal 1996.
 
10. SUBSEQUENT EVENTS
    In May 1996, the Company entered  into a development, marketing and  license
agreement (the "Agreement") with Metra Biosystems to develop an immunoassay test
cassette  incorporating Metra Biosystems bone  resporation technology to be used
with the L-D-X  System. Pursuant  to the Agreement,  Metra Biosystems  purchased
39,526  shares of the Company's Common Stock  for an aggregate purchase price of
$250,000 ($6.325 per share) and is obligated to purchase $750,000 of  additional
shares  of  Common Stock  upon  the completion  of  specified milestones  by the
Company.
 
    On May  9,  1996,  the  Company filed  a  Registration  Statement  with  the
Securities  and Exchange  Commission to  register for  sale 3,450,000  shares of
Common Stock,  which  includes  450,000 shares  related  to  the  over-allotment
option.
 
                                      F-13
<PAGE>
[LOGO]                                                     [PICTURE OF CASSETTE]
 
- --------------------------------------------------------------------------------
                CHOLESTECH L'D'X-REGISTERED TRADEMARK- PROCEDURE
 
Step 1: Take a blood sample from a fingerstick.
 
Step 2: Deposit the blood into the sample well of the test cassette.
 
Step 3: Insert the test cassette into the L-D-X Analyzer and press the "RUN"
        button.
 
Step 4: In less than five minutes, the
        L-D-X Analyzer displays the test results.
<PAGE>
- --------------------------------------------
                                    --------------------------------------------
- --------------------------------------------
                                    --------------------------------------------
 
    NO  DEALER,  SALES  REPRESENTATIVE  OR ANY  OTHER  PERSON  IS  AUTHORIZED IN
CONNECTION WITH ANY OFFERING MADE HEREBY TO GIVE ANY INFORMATION OR TO MAKE  ANY
REPRESENTATION  NOT CONTAINED HEREIN, AND IF  GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE  COMPANY
OR  THE UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL, OR A
SOLICITATION OF  AN OFFER  TO  BUY, ANY  SECURITIES  OTHER THAN  THE  SECURITIES
OFFERED  HEREBY, NOR DOES IT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN
OFFER TO BUY ANY SUCH SECURITIES TO  ANY PERSON IN ANY JURISDICTION IN WHICH  IT
IS  UNLAWFUL TO MAKE SUCH AN OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS
PROSPECTUS NOR ANY SALE MADE HEREUNDER  SHALL UNDER ANY CIRCUMSTANCES CREATE  AN
IMPLICATION  THAT THERE HAS BEEN  NO CHANGE IN THE  AFFAIRS OF THE COMPANY SINCE
THE DATE HEREOF OR THAT  THE INFORMATION CONTAINED HEREIN  IS CORRECT AS OF  ANY
DATE SUBSEQUENT TO THE DATE HEREOF.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                     PAGE
                                                   ---------
<S>                                                <C>
Prospectus Summary...............................          3
Risk Factors.....................................          5
The Company......................................         14
Use of Proceeds..................................         15
Price Range of Common Stock......................         16
Dividend Policy..................................         16
Capitalization...................................         17
Dilution.........................................         18
Selected Financial Data..........................         19
Management's Discussion and Analysis of Financial
  Condition and Results of Operations............         20
Business.........................................         25
Management.......................................         44
Certain Relationships and Related Transactions...         51
Principal Shareholders...........................         52
Description of Capital Stock.....................         53
Underwriting.....................................         55
Legal Matters....................................         56
Experts..........................................         56
Additional Information...........................         56
Index to Financial Statements....................        F-1
</TABLE>
 
                                3,000,000 SHARES
 
                                     [LOGO]
 
                                  COMMON STOCK
 
                              -------------------
 
                                   PROSPECTUS
 
                              -------------------
 
                     Vector Securities International, Inc.
 
                      Principal Financial Securities, Inc.
 
                                           , 1996
 
- --------------------------------------------
                                    --------------------------------------------
- --------------------------------------------
                                    --------------------------------------------
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
    The  following  table  sets  forth  all  expenses,  other  than underwriting
discounts and commissions, payable by the Company in connection with the sale of
the Common  Shares being  registered. All  of the  amounts shown  are  estimates
except for the SEC registration fee and the NASD filing fee.
 
<TABLE>
<S>                                                                         <C>
SEC Registration Fee......................................................  $   7,435
NASD Filing Fee...........................................................     22,063
Nasdaq National Market Listing Fee........................................     17,500
Blue Sky Qualification Fees and Expenses..................................     15,000
Printing and Engraving Expenses...........................................    125,000
Legal Fees and Expenses...................................................    200,000
Accounting Fees and Expenses..............................................     75,000
Transfer Agent and Registrar Fees.........................................      2,500
Miscellaneous.............................................................     35,502
                                                                            ---------
      TOTAL...............................................................  $ 500,000
                                                                            ---------
                                                                            ---------
</TABLE>
 
ITEM 14.  INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    As  permitted by Section  204(a) of the  California General Corporation Law,
the Registrant's  Articles  of  Incorporation eliminate  a  director's  personal
liability  for monetary damages  to the Registrant  and its shareholders arising
form a breach  or alleged breach  of the director's  fiduciary duty, except  for
liability  arising  under  Sections  310  and  316  of  the  California  General
Corporation Law or liability for (i) acts or omissions that involve  intentional
misconduct or knowing and culpable violation of law, (ii) acts or omissions that
a  director believes to be  contrary to the best  interests of the Registrant or
its shareholders or that involve  the absence of good faith  on the part of  the
director,  (iii)  any  transaction from  which  a director  derived  an improper
personal benefit, (iv) acts or omissions that show a reckless disregard for  the
director's  duty to the Registrant or its shareholders in circumstances in which
the director was aware,  or should have  been aware, in  the ordinary course  of
performing a director's duties, of a risk of serious injury to the Registrant or
its  shareholders, (v) acts or omissions that constitute an unexcused pattern of
inattention that  amounts  to  an  abdication of  the  director's  duty  to  the
Registrant  or  its  shareholders,  (vi)  interested  transactions  between  the
corporation and  a  director  in  which a  director  has  a  material  financial
interest,  and (vii) liability for  improper distributions, loans or guarantees.
This  provision  does  not  eliminate  the  directors'  duty  of  care,  and  in
appropriate  circumstances  equitable remedies  such as  an injunction  or other
forms of non-monetary relief would remain available under California law.
 
    Sections 204(a) and 317 of the California General Corporation Law  authorize
a  corporation to indemnify its directors,  officers, employees and other agents
in terms sufficiently broad  to permit indemnification (including  reimbursement
for  expenses)  under certain  circumstances for  liabilities arising  under the
Securities Act  of 1933,  as amended  (the "Securities  Act"). The  Registrant's
Articles of Incorporation and Bylaws contain provisions covering indemnification
to  the maximum  extent permitted by  the California General  Corporation Law of
corporate directors, officers and other  agents against certain liabilities  and
expenses  incurred as  a result of  proceedings involving such  persons in their
capacities as  directors, officers  employees or  agents, including  proceedings
under the Securities Act or the Securities Exchange Act of 1934, as amended. The
Company  has  entered into  Indemnification  Agreements with  its  directors and
executive officers.
 
    In addition  to  the  foregoing, the  Underwriting  Agreement  provides  for
indemnification  by  the  Underwriters  of  the  Registrant,  its  directors and
officers, and by  the Registrant  of the several  Underwriters, against  certain
liabilities, including liabilities arising under the Securities Act.
 
                                      II-1
<PAGE>
    At  present,  there  is  no pending  litigation  or  proceeding  involving a
director,  officer,  employee  or  other  agent  of  the  Registrant  in   which
indemnification  is being sought, nor is  the Registrant aware of any threatened
litigation that  may result  in a  claim for  indemnification by  any  director,
officer, employee or other agent of the Registrant.
 
ITEM 15.  RECENT SALES OF UNREGISTERED SECURITIES
 
    Since March 31, 1993, the Registrant has issued and sold (without payment of
any  selling  commission  to  any  person) 364,280  shares  of  Common  Stock to
employees and consultants at prices ranging from $0.20 to $5.00 per share,  upon
exercise   of  stock  options  and  stock   purchase  rights,  pursuant  to  the
Registrant's 1988 Stock Incentive Program.
 
    In May 1996, the Registrant issued and sold (without payment of any  selling
commission  to any  person) 39,526 shares  of Common Stock  to Metra Biosystems,
Inc. at a price of $6.325 per share.
 
    The sales of the above securities were deemed to be exempt from registration
under the Securities Act in reliance on  Section 4(2) of the Securities Act,  or
Regulation  D promulgated thereunder, or Rule 701 promulgated under Section 3(b)
of the  Securities Act,  as transactions  by an  issuer not  involving a  public
offering  or transactions pursuant  to compensatory benefit  plans and contracts
relating to compensation  as provided  under such  Rule 701.  The recipients  of
securities  in each such transaction represented  their intention to acquire the
securities for investment only and not with a view to or for sale in  connection
with  any distribution thereof and appropriate legends were affixed to the share
certificates and instruments  issued in  such transactions.  All recipients  had
adequate  access, through  their relationship  with the  Company, to information
about the Registrant.
 
ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
    (a) EXHIBITS
 
<TABLE>
<C>         <S>
  1.1       Form of Underwriting Agreement (draft dated May 7, 1996).
  3.1(2)    Restated Articles of Incorporation of Registrant.
  3.2(1)    Bylaws of Registrant, as amended.
  4.1(1)    Form of Common Stock Certificate.
  5.1       Opinion of Wilson Sonsini Goodrich & Rosati, P.C.
 10.1(3)    1988 Stock Incentive Program and forms of agreements thereunder.
 10.2(3)    Employee Stock Purchase Plan.
 10.3(1)    Standard Industrial Lease Agreement between Registrant and Sunlife
            Assurance Company of Canada dated October 22, 1989.
 10.3.1(8)  First Amendment to Standard Industrial Lease Agreement between Registrant
            and Sunlife Assurance Company of Canada dated April 1995.
 10.4(1)    Forms of Indemnification Agreements between Registrant and its officers and
            its directors.
 10.5(1)    Employment Agreement between Registrant and Edward L. Erickson dated
            December 6, 1991.
 10.6(1)    Equipment Lease Agreement between Registrant and MMC/GATX Partnership No. 1
            dated August 17, 1990.
 10.6.1(1)  Revised Warrant to Purchase Series D Preferred Stock issued to MMC/GATX
            Partnership No. 1.
 10.7(1)    Master Lease Agreement between Registrant and LINC Venture Lease Partners
            II L.P. dated June 13, 1991.
 10.7.1(1)  Amendment No. 1 to Warrant issued to LINC Venture Lease Partners II L.P.
 10.8(1)    Supply Agreement effective the 15th day of February 1991 by and between
            Ciba Corning Diagnostics Corp. and the Registrant.
 10.9(4)    Employment Agreement between Registrant and Steven L. Barbato dated April
            27, 1992.
</TABLE>
 
                                      II-2
<PAGE>
<TABLE>
<C>         <S>
 10.10(4)   Employment Agreement between Registrant and Robert J. Guyon dated July 13,
            1992.
10.11.1(5)  Letter Agreement effective September 28 1993 by and between Union Bank and
            Registrant.
10.11.2(5)  Promissory Note effective September 28 1993 by and between Union Bank and
            Registrant.
10.11.3(5)  Security Agreement effective September 28, 1993 by and between Union Bank
            and Registrant.
10.11.4(7)  First Amendment to the Letter Agreement by and between Union Bank and
            Registrant.
10.11.5(7)  First Amendment to the Promissory Note by and between Union Bank and
            Registrant.
10.11.6(10) Second Amendment to the Letter Agreement by and between Union Bank and
            Registrant.
10.11.7(10) Second Amendment to the Promissory Note by and between Union Bank and
            Registrant.
 10.12(4)   License Agreement between Registrant and Eastman Kodak Company dated
            December 23, 1992.
 10.13(6)   Employment Agreement between Registrant and Linda H. Masterson dated May
            12, 1994.
 10.14(9)   Loan Agreement between Registrant and Phoenixcor, Inc. dated August 31,
            1995.
 10.15*     Development, License and Distribution Agreement between Registrant and
            Metra Biosystems, Inc. dated May 3, 1996.
 10.16      Registration Rights Agreement between Registrant and Metra Biosystems, Inc.
            dated May 3, 1996.
 23.1       Consent of Price Waterhouse LLP, Independent Accountants (see page II-6).
 23.2       Consent of Wilson Sonsini Goodrich & Rosati, P.C. (included in Exhibit
            5.1).
 23.3       Consent of Dehlinger & Associates.
 24.1       Power of Attorney (See page II-4).
</TABLE>
 
- --------------
 *  Confidential treatment has been  requested with respect to certain  portions
    of  this exhibit. The redacted portions  have been filed separately with the
    Securities and Exchange Commission.
 
(1) Incorporated by reference to  exhibits filed with Registrant's  Registration
    Statement  on Form  S-1 (No.  33-47603) which  became effective  on June 26,
    1992.
 
(2) Incorporated by reference to  exhibits filed with Registrant's  Registration
    Statement  on Form S-1 (No. 33-54300) which became effective on December 16,
    1992.
 
(3) Incorporated by reference to  exhibits filed with Registrant's  Registration
    Statement  on  Form S-8  (No.  333-4148) as  filed  with the  Securities and
    Exchange Commission on April 26, 1996.
 
(4) Incorporated by reference to exhibits filed with Registrant's Annual  Report
    on Form 10-K for the year ended March 26, 1993.
 
(5)  Incorporated  by reference  to exhibits  filed with  Registrant's Quarterly
    Report on Form 10-Q for the quarter ended December 23, 1993.
 
(6) Incorporated  by reference  to exhibits  filed with  Registrant's  Quarterly
    Report on Form 10-Q for the quarter ended June 24, 1994.
 
(7)  Incorporated  by reference  to exhibits  filed with  Registrant's Quarterly
    Report on Form 10-Q for the quarter ended September 23, 1994.
 
(8) Incorporated  by reference  to exhibits  filed with  Registrant's  Quarterly
    Report on Form 10-Q for the quarter ended June 30, 1995.
 
(9)  Incorporated  by reference  to exhibits  filed with  Registrant's Quarterly
    Report on Form 10-Q for the quarter ended September 29, 1995.
 
(10) Incorporated by  reference to  exhibits filed  with Registrant's  Quarterly
    Report on Form 10-Q for the quarter ended December 29, 1995.
 
                                      II-3
<PAGE>
    (b) FINANCIAL STATEMENT SCHEDULES:
II -- Valuation and Qualifying Accounts
 
                             CHOLESTECH CORPORATION
                       VALUATION AND QUALIFYING ACCOUNTS
 
<TABLE>
<CAPTION>
                                                                              ADDITIONS
                                                                 BALANCE AT      TO                    BALANCE AT
                                                                 BEGINNING    COSTS AND                  END OF
                                                                 OF PERIOD    EXPENSES    DEDUCTIONS     PERIOD
                                                                 ----------  -----------  -----------  ----------
<S>                                                              <C>         <C>          <C>          <C>
FISCAL YEAR ENDED MARCH 25, 1994
  Allowance for doubtful accounts..............................  $  115,000   $  11,000    $  50,000   $   76,000
  Amortization of other assets.................................      60,000     142,000           --      202,000
                                                                 ----------  -----------  -----------  ----------
                                                                 $  175,000   $ 153,000    $  50,000   $  278,000
                                                                 ----------  -----------  -----------  ----------
                                                                 ----------  -----------  -----------  ----------
FISCAL YEAR ENDED MARCH 31, 1995
  Allowance for doubtful accounts..............................  $   76,000   $  17,000    $  68,000   $   25,000
  Amortization of other assets.................................     202,000     142,000           --      344,000
                                                                 ----------  -----------  -----------  ----------
                                                                 $  278,000   $ 159,000    $  68,000   $  369,000
                                                                 ----------  -----------  -----------  ----------
                                                                 ----------  -----------  -----------  ----------
FISCAL YEAR ENDED MARCH 29, 1996
  Allowance for doubtful accounts..............................  $   25,000   $  57,000    $      --   $   82,000
  Amortization of other assets.................................     344,000     487,000           --      831,000
                                                                 ----------  -----------  -----------  ----------
                                                                 $  369,000   $ 544,000    $      --   $  913,000
                                                                 ----------  -----------  -----------  ----------
                                                                 ----------  -----------  -----------  ----------
</TABLE>
 
    All other Schedules for which provision is made in the applicable accounting
regulations of the Securities and Exchange Commission are not required under the
related instructions or are inapplicable, and therefore have been omitted.
 
ITEM 17. UNDERTAKINGS
 
    The  Registrant  hereby undertakes  to provide  to  the Underwriters  at the
closing  specified  in   the  Underwriting  Agreement,   certificates  in   such
denominations  and registered in  such names as required  by the Underwriters to
permit prompt delivery to each purchaser.
 
    Insofar as indemnification for liabilities arising under the Securities  Act
of  1933 (the  "Act") may  be permitted  to directors,  officers and controlling
persons of the Registrant pursuant to the foregoing provisions or otherwise, the
Registrant has been advised that in  the opinion of the Securities and  Exchange
Commission  such indemnification  is against public  policy as  expressed in the
Act,  and  is,  therefore,  unenforceable.  In  the  event  that  a  claim   for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses incurred or paid  by a director, officer, or  controlling
person  of  the Registrant  in the  successful  defense of  any action,  suit or
proceeding) is  asserted by  such  director, officer  of controlling  person  in
connection  with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to  a court  of appropriate  jurisdiction the  question of  whether  such
indemnification  by it is  against public policy as  expressed in the Securities
Act and will be governed by the final adjudication of such issue.
 
    The Registrant hereby undertakes that:
 
        (1) For purposes of determining  any liability under the Securities  Act
    of  1933 (the  "Act"), the information  omitted from the  form of Prospectus
    filed as part of this Registration Statement in reliance upon Rule 430A  and
    contained  in a form of Prospectus filed  by the Registrant pursuant to Rule
    424(b)(1) or (4) or 497(h) under the Act shall be deemed to be part of  this
    Registration Statement as of the time it was declared effective.
 
        (2)  For the purpose  of determining any  liability under the Securities
    Act  of  1933,  each  post-effective  amendment  that  contains  a  form  of
    Prospectus  shall be deemed  to be a new  Registration Statement relating to
    the securities offered therein, and the Offering of such securities at  that
    time shall be deemed to be the initial bona fide offering thereof.
 
                                      II-4
<PAGE>
                                   SIGNATURES
 
    Pursuant  to the requirements of the Securities Act of 1933, as amended, the
Registrant has duly caused this Registration Statement on Form S-1 to be  signed
on  its behalf  by the  undersigned, thereunto duly  authorized, in  the City of
Hayward, State of California, on the day of May 9, 1996.
 
                                          CHOLESTECH CORPORATION
 
                                          By    /S/  WARREN E. PINCKERT II
 
                                            ------------------------------------
                                                  (Warren E. Pinckert II)
                                             PRESIDENT, CHIEF EXECUTIVE OFFICER
                                                        AND DIRECTOR
 
                               POWER OF ATTORNEY
 
    KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below hereby constitutes and appoints Warren  E. Pinckert and Richard H.  Janney
and  each one of them, acting individually and  without the other, as his or her
attorney-in-fact, each with full power of  substitution, for him and her in  any
and  all  capacities,  to  sign  any and  all  amendments  to  this Registration
Statement (including post-effective  amendments), and to  sign any  registration
statement  for the same offering covered  by this Registration Statement that is
to be  effective upon  filing  pursuant to  Rule  462(b) promulgated  under  the
Securities  Act of 1933, and all  post-effective amendments thereto, and to file
the same, with  exhibits thereto  and other documents  in connection  therewith,
with the Securities and Exchange Commission, hereby ratifying and confirming all
that  each of said attorneys-in-fact, or his substitute or substitutes may do or
cause to be done by virtue hereof.
 
    PURSUANT  TO  THE  REQUIREMENTS  OF   THE  SECURITIES  ACT  OF  1933,   THIS
REGISTRATION  STATEMENT  HAS  BEEN  SIGNED  BY  THE  FOLLOWING  PERSONS  IN  THE
CAPACITIES AND ON THE DATES INDICATED
 
<TABLE>
<CAPTION>
                        SIGNATURE                                                TITLE                             DATE
- ---------------------------------------------------------  -------------------------------------------------  ---------------
 
<C>                                                        <S>                                                <C>
                    /S/  WARREN E. PINCKERT II
      ---------------------------------------------        President, Chief Executive Officer and Director        May 9, 1996
                 (Warren E. Pinckert II)                    (Principal Executive Officer)
 
                      /S/  RICHARD H. JANNEY               Vice President, Finance and Chief Financial
      ---------------------------------------------         Officer (Principal Financial and Accounting           May 9, 1996
                   (Richard H. Janney)                      Officer)
 
                  /S/  HARVEY S. SADOW, PH.D.
      ---------------------------------------------        Chairman of the Board                                  May 9, 1996
                (Harvey S. Sadow, Ph.D.)
 
                       /S/  JOHN L. CASTELLO
      ---------------------------------------------        Director                                               May 9, 1996
                   (John L. Castello)
 
                         /S/  H.R. SHEPHERD
      ---------------------------------------------        Director                                               May 9, 1996
                     (H.R. Shepherd)
 
                    /S/  JOSEPH BUCHMAN, M.D.
      ---------------------------------------------        Director                                               May 9, 1996
                 (Joseph Buchman, M.D.)
</TABLE>
 
                                      II-5
<PAGE>
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
We  hereby  consent to  the  use in  the  Prospectus constituting  part  of this
Registration Statement on Form S-1 of our report dated April 24, 1996, except as
to Note 11 which is as of May  9, 1996, relating to the financial statements  of
Cholestech Corporation, which appears in such Prospectus. We also consent to the
application  of such  report to the  Financial Statement Schedule  for the three
years ended  March  29,  1996  listed under  Item  16(b)  of  this  Registration
Statement  when  such  schedule  is  read  in  conjunction  with  the  financial
statements referred to in our report. The audits referred to in such report also
included this  schedule. We  also consent  to  the references  to us  under  the
headings "Experts" and "Selected Financial Data" in such Prospectus. However, it
should  be noted that  Price Waterhouse LLP  has not prepared  or certified such
"Selected Financial Data."
 
PRICE WATERHOUSE LLP
San Jose, California
May 9, 1996
 
                                      II-6
<PAGE>
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
  EXHIBIT                                                                                        SEQUENTIALLY
   NUMBER                                       DESCRIPTION                                      NUMBERED PAGE
- ------------  --------------------------------------------------------------------------------  ---------------
<C>           <S>                                                                               <C>
   1.1        Form of Underwriting Agreement (draft dated May 7, 1996). ......................
   3.1(2)     Restated Articles of Incorporation of Registrant. ..............................
   3.2(1)     Bylaws of Registrant, as amended. ..............................................
   4.1(1)     Form of Common Stock Certificate. ..............................................
   5.1        Opinion of Wilson Sonsini Goodrich & Rosati, P.C. ..............................
  10.1(3)     1988 Stock Incentive Program and forms of agreements thereunder. ...............
  10.2(3)     Employee Stock Purchase Plan. ..................................................
  10.3(1)     Standard Industrial Lease Agreement between Registrant and Sunlife Assurance
              Company of Canada dated October 22, 1989. ......................................
  10.3.1(8)   First Amendment to Standard Industrial Lease Agreement between Registrant and
              Sunlife Assurance Company of Canada dated April 1995. ..........................
  10.4(1)     Forms of Indemnification Agreements between Registrant and its officers and its
              directors. .....................................................................
  10.5(1)     Employment Agreement between Registrant and Edward L. Erickson dated December 6,
              1991. ..........................................................................
  10.6(1)     Equipment Lease Agreement between Registrant and MMC/GATX Partnership No. 1
              dated August 17, 1990. .........................................................
  10.6.1(1)   Revised Warrant to Purchase Series D Preferred Stock issued to MMC/GATX
              Partnership No. 1. .............................................................
  10.7(1)     Master Lease Agreement between Registrant and LINC Venture Lease Partners II
              L.P. dated June 13, 1991. ......................................................
  10.7.1(1)   Amendment No. 1 to Warrant issued to LINC Venture Lease Partners II L.P. .......
  10.8(1)     Supply Agreement effective the 15th day of February 1991 by and between Ciba
              Corning Diagnostics Corp. and the Registrant. ..................................
  10.9(4)     Employment Agreement between Registrant and Steven L. Barbato dated April 27,
              1992. ..........................................................................
  10.10(4)    Employment Agreement between Registrant and Robert J. Guyon dated July 13,
              1992. ..........................................................................
  10.11.1(5)  Letter Agreement effective September 28 1993 by and between Union Bank and
              Registrant. ....................................................................
  10.11.2(5)  Promissory Note effective September 28 1993 by and between Union Bank and
              Registrant.
  10.11.3(5)  Security Agreement effective September 28, 1993 by and between Union Bank and
              Registrant. ....................................................................
  10.11.4(7)  First Amendment to the Letter Agreement by and between Union Bank and
              Registrant. ....................................................................
  10.11.5(7)  First Amendment to the Promissory Note by and between Union Bank and
              Registrant. ....................................................................
 10.11.6(10)  Second Amendment to the Letter Agreement by and between Union Bank and
              Registrant. ....................................................................
 10.11.7(10)  Second Amendment to the Promissory Note by and between Union Bank and
              Registrant. ....................................................................
  10.12(4)    License Agreement between Registrant and Eastman Kodak Company dated December
              23, 1992. ......................................................................
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
  EXHIBIT                                                                                        SEQUENTIALLY
   NUMBER                                       DESCRIPTION                                      NUMBERED PAGE
- ------------  --------------------------------------------------------------------------------  ---------------
  10.13(6)    Employment Agreement between Registrant and Linda H. Masterson dated May 12,
              1994. ..........................................................................
<C>           <S>                                                                               <C>
  10.14(9)    Loan Agreement between Registrant and Phoenixcor, Inc. dated August 31,
              1995. ..........................................................................
  10.15*      Development, License and Distribution Agreement between Registrant and Metra
              Biosystems, Inc. dated May 3, 1996. ............................................
  10.16       Registration Rights Agreement between Registrant and Metra Biosystems, Inc.
              dated May 3, 1996. .............................................................
  23.1        Consent of Price Waterhouse LLP, Independent Accountants (see page II-6). ......
  23.2        Consent of Wilson Sonsini Goodrich & Rosati, P.C. (included in Exhibit 5.1). ...
  23.3        Consent of Dehlinger & Associates...............................................
  24.1        Power of Attorney (See page II-4). .............................................
</TABLE>
 
- --------------
 *   Confidential treatment has been  requested with respect to certain portions
    of this  exhibit.  Omitted portions  have  been filed  separately  with  the
    Securities and Exchange Commission.
 
(1)  Incorporated by reference to  exhibits filed with Registrant's Registration
    Statement on Form  S-1 (No.  33-47603) which  became effective  on June  26,
    1992.
 
(2)  Incorporated by reference to  exhibits filed with Registrant's Registration
    Statement on Form S-1 (No. 33-54300) which became effective on December  16,
    1992.
 
(3)  Incorporated by reference to  exhibits filed with Registrant's Registration
    Statement on  Form S-8  (No.  333-4148) as  filed  with the  Securities  and
    Exchange Commission on April 26, 1996.
 
(4)  Incorporated by reference to exhibits filed with Registrant's Annual Report
    on Form 10-K for the year ended March 26, 1993.
 
(5) Incorporated  by reference  to exhibits  filed with  Registrant's  Quarterly
    Report on Form 10-Q for the quarter ended December 23, 1993.
 
(6)  Incorporated  by reference  to exhibits  filed with  Registrant's Quarterly
    Report on Form 10-Q for the quarter ended June 24, 1994.
 
(7) Incorporated  by reference  to exhibits  filed with  Registrant's  Quarterly
    Report on Form 10-Q for the quarter ended September 23, 1994.
 
(8)  Incorporated  by reference  to exhibits  filed with  Registrant's Quarterly
    Report on Form 10-Q for the quarter ended June 30, 1995.
 
(9) Incorporated  by reference  to exhibits  filed with  Registrant's  Quarterly
    Report on Form 10-Q for the quarter ended September 29, 1995.
 
(10)  Incorporated by  reference to  exhibits filed  with Registrant's Quarterly
    Report on Form 10-Q for the quarter ended December 29, 1995.

<PAGE>

                                3,000,000 Shares

                             CHOLESTECH CORPORATION

                                  Common Stock


                             UNDERWRITING AGREEMENT


                                                                    May __, 1996


VECTOR SECURITIES INTERNATIONAL, INC.
PRINCIPAL FINANCIAL SECURITIES, INC.

     As Representatives of the Several Underwriters

c/o  VECTOR SECURITIES INTERNATIONAL, INC.
     1751 Lake Cook Road, Suite 350
     Deerfield, Illinois  60015

Dear Sirs:

          Cholestech Corporation, a California corporation (the "Company"),
proposes to issue and sell an aggregate of 3,000,000 shares of its common stock,
no par value per share (the "Initial Securities"), to the several Underwriters
named in Schedule I hereto (the "Underwriters") for whom Vector Securities
International, Inc. ("Vector") and Principal Financial Securities, Inc. are
acting as representatives (the "Representatives").  In addition, solely for the
purpose of covering over-allotments, the Company proposes to grant to the
several Underwriters, upon the terms and conditions set forth in Section 2
hereof, an option to purchase up to an additional 450,000 shares of common stock
of the Company (the "Option Securities").  The Initial Securities and the Option
Securities are hereinafter collectively referred to as the "Securities."  The
Company's common stock, no par value per share, including the Securities, is
hereinafter referred to as the "Common Stock."  The Company wishes to confirm as
follows its agreements with you and the other Underwriters on whose behalf you
are acting in connection with the several purchases by the Underwriters of the
Securities:

          1.   REGISTRATION STATEMENT AND PROSPECTUS.  The Company has prepared
and filed with the Securities and Exchange Commission (the "Commission") a
registration statement on Form S-1 (No. 333-_____) covering the registration of
the Securities under the Securities Act of 1933, as amended (the "1933 Act"),
including the related preliminary prospectus, or prospectuses, and either (A)
has prepared and filed, prior to the effective date of such registration
statement, an amendment to such registration statement, including a final
prospectus or (B) if the Company has elected to rely upon Rule 430A ("Rule
430A") of the rules and regulations of the Commission under the 1933 Act (the
"1933 Act Regulations"),

<PAGE>

will prepare and file a prospectus, in accordance with the provisions of Rule
430A and Rule 424(b) ("Rule 424(b)") of the 1933 Act Regulations, promptly after
execution and delivery of this Agreement.  Additionally, if the Company has
elected to rely upon Rule 434 ("Rule 434") of the 1933 Act Regulations, the
Company will prepare and file a term sheet (a "Term Sheet") in accordance with
the provisions of Rule 434 and Rule 424(b), promptly after execution and
delivery of this Agreement.  The information, if any, included in such
prospectus or in such Term Sheet, that was omitted from such registration
statement at the time it became effective but that is deemed to be part of such
registration statement at the time it becomes effective (a) pursuant to
paragraph (b) of Rule 430A, is referred to herein as the "Rule 430A
Information," or (b) pursuant to paragraph (d) of Rule 434, is referred to
herein as the "Rule 434 Information."  Each prospectus used before the time such
registration statement became effective, and any prospectus that omitted, as
applicable, the Rule 430A Information or the Rule 434 Information that was used
after effectiveness and prior to the execution and delivery of this Agreement is
herein called a "preliminary prospectus."  Such registration statement,
including the exhibits and schedules thereto, at the time it became effective
and including, if applicable, the Rule 430A Information or the Rule 434
Information, is herein called the "Registration Statement."  Any registration
statement filed pursuant to Rule 462(b) of the 1933 Act Regulations is herein
referred to as the "Rule 462(b) Registration Statement," and after such filing
the term Registration Statement shall include the Rule 462(b) Registration
Statement.  The final prospectus in the form first furnished to the Underwriters
for use in connection with the offering of the Securities is herein referred to
as the "Prospectus."  If Rule 434 is relied upon, the term "Prospectus" shall
refer to the preliminary prospectus last furnished to the Underwriters in
connection with the offering of the Securities, together with the Term Sheet,
and all references to the date of the Prospectus shall mean the date of the Term
Sheet.  For purposes of this Agreement, all references to the Registration
Statement, any preliminary prospectus, the Prospectus or any Term Sheet or any
amendment or supplement to any of the foregoing shall be deemed to include the
copy, if any, filed with the Commission pursuant to its Electronic Data
Gathering, Analysis and Retrieval system ("EDGAR").

          2.   AGREEMENTS TO SELL AND PURCHASE.  Upon the basis of the
representations, warranties and agreements contained herein and subject to all
the terms and conditions set forth herein, the Company hereby agrees to issue
and sell to each Underwriter and each Underwriter agrees, severally and not
jointly, to purchase from the Company, at a purchase price of $________ per
share (the "purchase price per share"), the number of Initial Securities set
forth in Schedule I opposite the name of such Underwriter under the column
"Number of Initial Securities to be Purchased from the Company" (or such number
of Initial Securities increased as set forth in Section 10 hereof).

          Upon the basis of the representations, warranties and agreements
contained herein and subject to all the terms and

                                        2

<PAGE>

conditions set forth herein, the Company hereby grants an option (the "over-
allotment option") to the Underwriters to purchase from the Company, at the
purchase price per share, up to an aggregate of 450,000 Option Securities.
Option Securities may be purchased solely for the purpose of covering over-
allotments made in connection with the offering of the Securities.  Such option
shall expire at 5:00 P.M., Chicago time, on the 30th day after the date of this
Agreement (or, if such 30th day shall be a Saturday or Sunday or a holiday, on
the next business day thereafter when the New York Stock Exchange is open for
trading).  Such over-allotment option may be exercised at any time or from time
to time until its expiration.  Upon any exercise of the over-allotment option,
each Underwriter, severally and not jointly, agrees to purchase from the Company
that proportion of the total number of Option Securities as is equal to the
percentage of Initial Securities that such Underwriter is purchasing from the
Company (or such number of Initial Securities increased as set forth in Section
10 hereof), subject to such adjustments as you may determine to avoid fractional
shares.

          3.   TERMS OF PUBLIC OFFERING.  The Company has been advised by you
that the Underwriters propose to make a public offering of the Securities as
soon after the Registration Statement and this Agreement have become effective
as in your judgment is advisable and initially to offer the Securities upon the
terms set forth in the Prospectus.

          4.   DELIVERY OF THE SECURITIES AND PAYMENT THEREFOR.  Delivery to the
Underwriters of and payment for the Initial Securities shall be made at the
office of Skadden, Arps, Slate, Meagher & Flom, 333 West Wacker Drive, Suite
2100, Chicago, Illinois  60606, at 9:00 A.M., Chicago time, on the third
(fourth, if the pricing occurs after 4:30 p.m. (Eastern Time) on any given day)
business day after the date hereof (unless postponed in accordance with the
provisions of Section 10 hereof) (the "Closing Date").  The place of closing for
the Initial Securities and the Closing Date may be varied by agreement among you
and the Company.

          Delivery to the Underwriters of and payment for any Option Securities
to be purchased by the Underwriters shall be made at the aforementioned office
of Skadden, Arps, Slate, Meagher & Flom at such time on such date (an "Option
Closing Date"), which may be the same as the Closing Date but shall in no event
be earlier than the Closing Date nor earlier than two nor later than ten
business days after the giving of the notice hereinafter referred to, as shall
be specified in a written notice from you on behalf of the Underwriters to the
Company of the Underwriters' determination to purchase a number, specified in
such notice, of Option Securities.  The place of closing for any Option
Securities and the Option Closing Date for such Option Securities may be varied
by agreement between you and the Company.

          Certificates for the Initial Securities and for any Option Securities
to be purchased hereunder shall be registered in such names and in such
denominations as you shall request by

                                        3

<PAGE>

written notice (it being understood that a facsimile transmission shall be
deemed written notice) prior to 9:30 A.M., Chicago time, on the second business
day preceding the Closing Date or any Option Closing Date, as the case may be.
Such certificates shall be made available to you in Chicago, Illinois or New
York, New York, as requested by you in the aforesaid notice, for inspection and
packaging not later than 9:30 A.M., Chicago time, on the business day next
preceding the Closing Date or an Option Closing Date, as the case may be.  The
certificates evidencing the Initial Securities and any Option Securities to be
purchased hereunder shall be delivered to you on the Closing Date or the Option
Closing Date, as the case may be, against payment of the purchase price therefor
by certified or official bank check or checks payable in New York Clearing House
(next day) funds to the order of the Company.  It is understood that each
Underwriter has authorized you, for its account, to accept delivery of,
acknowledge receipt of, and make payment of the purchase price for, the Initial
Securities and the Option Securities, if any, which it has agreed to purchase.
Vector, individually and not as representative of the Underwriters, may (but
shall not be obligated to) make payment of the purchase price for the Initial
Securities or the Option Securities, if any, to be purchased by any Underwriter
whose check has not been received by the Closing Date or the Option Closing
Date, as the case may be, but such payment shall not relieve such Underwriter
from its obligations hereunder.

          5.   AGREEMENTS OF THE COMPANY.  The Company covenants and agrees with
the several Underwriters as follows:

               a.  The Company will notify the Underwriters immediately, and
confirm the notice in writing, (i) of the effectiveness of the Registration
Statement and any amendment thereto, (ii) of the receipt of any comments from
the Commission, (iii) of any request by the Commission for any amendment to the
Registration Statement or any amendment or supplement to the Prospectus or for
additional information, (iv) of the issuance by the Commission of any stop order
suspending the effectiveness of the Registration Statement or the suspension of
qualification of the Securities for offering or sale in any jurisdiction or the
initiation of any proceedings for such purpose and (v) during the period when
the Prospectus is required to be delivered under the 1933 Act or Securities
Exchange Act of 1934, as amended (the "1934 Act"), of any change, or any event
or occurrence which could result in such a change, in the Company's condition,
financial or otherwise, or the earnings, business affairs or business prospects
of the Company or the happening of any event, including the filing of any
information, documents or reports pursuant to the 1934 Act, that makes any
statement of a material fact made in the Registration Statement or the
Prospectus (as then amended or supplemented) untrue or which requires the making
of any additions to or changes in the Registration Statement or the Prospectus
in order to state a material fact required by the 1933 Act or the 1933 Act
Regulations to be stated therein or necessary in order to make the statements
therein not misleading, or of the necessity to amend or supplement the
Prospectus to comply with the 1933 Act, the 1933 Act

                                        4

<PAGE>

Regulations or any other law.  The Company shall use its best efforts to prevent
the issuance of any stop order or order suspending the qualification or
exemption of the Securities under any state securities or Blue Sky laws, and, if
at any time the Commission shall issue any stop order suspending the
effectiveness of the Registration Statement, or any state securities commission
or other regulatory authority shall issue an order suspending the qualification
or exemption of the Securities under any state securities or Blue Sky laws, the
Company shall use every reasonable effort to obtain the withdrawal or lifting of
such order at the earliest possible time.

               b.  The Company will give the Underwriters notice of its
intention to prepare or file any amendment to the Registration Statement
(including any post-effective amendment), any Rule 462(b) Registration
Statement, any Term Sheet or any amendment or supplement to the Prospectus
(including any revised prospectus or Term Sheet and preliminary prospectus which
the Company proposes for use by the Underwriters in connection with the offering
of the Securities which differs from the prospectus on file at the Commission at
the time the Registration Statement becomes effective, whether or not such
revised prospectus or Term Sheet and preliminary prospectus is required to be
filed pursuant to Rule 424(b)), whether pursuant to the 1933 Act, the 1934 Act
or otherwise, will furnish the Underwriters with copies of any Rule 462(b)
Registration Statement, Term Sheet, amendment or supplement a reasonable amount
of time prior to such proposed filing or use, as the case may be, and will not
file any such Rule 462(b) Registration Statement, Term Sheet, amendment or
supplement or use any such prospectus to which the Underwriters or counsel for
the Underwriters shall object.

               c.  The Company has furnished or will deliver to the Underwriters
and their counsel, without charge, as many signed and conformed copies of the
Registration Statement as originally filed and of each amendment thereto
(including exhibits filed therewith or incorporated by reference therein) as the
Underwriters may reasonably request.  If applicable, the copies of the
Registration Statement and each amendment thereto furnished to the Underwriters
will be identical to the electronically transmitted copies thereof filed with
the Commission pursuant to EDGAR, except to the extent permitted by Regulation
S-T.

               d.  The Company will furnish to each Underwriter, without charge,
from time to time during the period when the Prospectus is required to be
delivered under the 1933 Act or the 1934 Act, such number of copies of the
Prospectus (as amended or supplemented) as such Underwriter may reasonably
request for the purposes contemplated by the 1933 Act, the 1934 Act, the 1933
Act Regulations or the rules and regulations of the Commission under the 1934
Act (the "1934 Act Regulations").  If applicable, the Prospectus and any
amendments or supplements thereto furnished to the Underwriters will be
identical to the electronically transmitted copies thereof filed with the
Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

                                        5

<PAGE>

               e.  The Company will comply with the 1933 Act and the 1933 Act
Regulations so as to permit the completion of the distribution of the Securities
as contemplated in this Agreement and in the Prospectus.  If at any time when a
prospectus is required by the 1933 Act, the 1934 Act, the 1933 Act Regulations
or the 1934 Act Regulations to be delivered in connection with sales of the
Securities, any event shall occur or condition shall exist as a result of which
it is necessary, in the opinion of counsel for the Underwriters or for the
Company, to amend the Registration Statement or amend or supplement the
Prospectus in order that the Prospectus will not include any untrue statements
of a material fact or omit to state a material fact necessary in order to make
the statements therein not misleading in the light of the circumstances existing
at the time it is delivered to a purchaser, or if it shall be necessary, in the
opinion of such counsel, at any such time to amend the Registration Statement or
amend or supplement the Prospectus in order to comply with the requirements of
the 1933 Act or the 1933 Act Regulations, the Company will promptly prepare and
file with the Commission, subject to Section 5(b), such amendment or supplement
as may be necessary to correct such statement or omission or to make the
Registration Statement or the Prospectus comply with such requirements and the
Company will furnish to the Underwriters such number of copies of such amendment
or supplement as the Underwriters may reasonably request.

               f.  During the period of five years hereafter, the Company will
furnish to you (i) as soon as available, a copy of each report of the Company
mailed to stockholders or filed with the Commission or the Nasdaq National
Market ("NASDAQ"), and (ii) from time to time such other information concerning
the Company as you may request.

               g.  The Company will use its best efforts, in cooperation with
counsel to the Underwriters, to qualify the Securities for offering and sale
under the applicable securities or Blue Sky laws of such states and other
jurisdictions of the United States as the Underwriters may designate and to
maintain such qualifications in effect for a period of not less than one year
from the later of the effective date of the Registration Statement and any Rule
462(b) Registration Statement; PROVIDED, HOWEVER, that the Company shall not be
obligated to qualify as a foreign corporation in any jurisdiction in which it is
not so qualified.  In each jurisdiction in which the Securities have been so
qualified, the Company will file such statements and reports as may be required
by the laws of such jurisdiction to continue such qualification in effect for a
period of not less than one year from the later of the effective date of the
Registration Statement and any Rule 462(b) Registration Statement.

               h.  The Company will make generally available to its security
holders as soon as practicable, but not later than 45 days after the close of
the period covered thereby, an earnings statement (in form complying with the
provisions of Rule 158 of the 1933 Act Regulations) covering a twelve-month
period beginning not later than the first day of the Company's fiscal quarter
next fol-

                                        6

<PAGE>

lowing the "effective date" (as defined in said Rule 158) of the Registration
Statement.

               i.  The Company will use the net proceeds received by it from the
sale of the Securities in the manner specified in the Prospectus under "Use of
Proceeds."

               j.  If, at the time that the Registration Statement becomes
effective, any Rule 430A Information or Rule 434 Information shall have been
omitted therefrom, then immediately following the execution of this Agreement,
the Company will prepare, and file or transmit for filing with the Commission in
accordance with Rule 430A or Rule 434 and Rule 424(b), copies of a Prospectus or
Term Sheet containing such Rule 430A Information and Rule 434 Information,
respectively, or, if required by Rule 430A, a post-effective amendment to the
Registration Statement (including an amended Prospectus), containing such Rule
430A Information.

               k.  If the Company elects to rely upon Rule 462(b), the Company
shall both file a Rule 462(b) Registration Statement with the Commission in
compliance with Rule 462(b) and pay the applicable fees in accordance with Rule
111 of the 1933 Act Regulations by the earlier of (i) 10:00 P.M. Eastern Time on
the date hereof and (ii) the time confirmations are sent or given, as specified
by Rule 462(b)(2).

               l.  The Company, during the period when the Prospectus is
required to be delivered under the 1933 Act or the 1934 Act, will file all
documents required to be filed with the Commission pursuant to Section 13, 14 or
15 of the 1934 Act within the time periods required by the 1934 Act and the 1934
Act Regulations.

               m.  During a period of 90 days from the date of the Prospectus,
the Company will not, without the prior written consent of Vector, (i) offer,
pledge, sell, contract to sell, sell any option or contract to purchase,
purchase any option or contract to sell, grant any option, right or warrant to
purchase or otherwise transfer or dispose of, directly or indirectly, any share
of Common Stock or any securities convertible into or exercisable or
exchangeable for Common Stock or file any registration statement under the 1933
Act with respect to any of the foregoing or (ii) enter into any swap or any
other agreement or any transaction that transfers, in whole or in part, directly
or indirectly, the economic consequence of ownership of the Common Stock,
whether any such swap or transaction described in clause (i) or (ii) above is to
be settled by delivery of Common Stock or such other securities, in cash or
otherwise.  The foregoing sentence shall not apply to (A) the Securities to be
sold hereunder, (B) any shares of Common Stock issued by the Company upon the
exercise of an option or warrant or the conversion of security outstanding on
the date hereof and referred to in the Prospectus, (C) any shares of Common
Stock issued or options to purchase Common Stock granted pursuant to existing
employee benefit plans of the Company referred to in the Prospectus or (D) any
shares of Common Stock issued pursuant to any non-employee director stock plan.

                                        7

<PAGE>

               n.  The Company has furnished or will furnish to you "lock-up"
letters, in form and substance satisfactory to you, signed by each of its
current officers and directors and each of its stockholders designated by you.

               o.  The Company will supply the Underwriters with copies of all
correspondence to and from, and all documents issued to and by, the Commission
in connection with the registration of the Securities under the 1933 Act.

               p.  Prior to the Closing Date, the Company shall furnish to the
Underwriters, as soon as they have been prepared, copies of any unaudited
interim consolidated financial statements of the Company, for any periods
subsequent to the periods covered by the financial statements appearing in the
Registration Statement and the Prospectus.

               q.  Prior to the Closing Date, the Company will issue no press
release or other communications directly or indirectly and hold no press
conference with respect to the Company, the condition, financial or otherwise,
or the earnings, business affairs or business prospects of it, or the offering
of the Securities, without the prior written consent of the Representatives
unless in the judgment of the Company and its counsel, and after notification to
the Representatives, such press release or communication is required by law.

               r.  The Company will comply with all provisions of Florida H.B.
1771, codified as Section 517.075 of the Florida statutes, and all regulations
promulgated thereunder relating to issuers doing business with Cuba.

               s.  The Company has not taken, nor will it take, directly or
indirectly, any action designed to, or that might reasonably be expected to,
cause or result in stabilization or manipulation of the price of the Common
Stock to facilitate the sale or resale of the Securities.

               t.  The Company will use its best efforts to maintain the
quotation of the Common Stock (including the Securities) on NASDAQ and will file
with NASDAQ all documents and notices required by NASDAQ of companies that have
securities that are traded in the over-the-counter market and quotations for
which are reported by NASDAQ.

          6.   REPRESENTATIONS AND WARRANTIES OF THE COMPANY.  The Company
represents and warrants to each Underwriter that:

               a.  When the Registration Statement, any Rule 462(b) Registration
Statement and any post-effective amendment thereto becomes effective, at the
date of the Prospectus, if different, and at the Closing Date and the Option
Closing Date, as the case may be, (i) the Registration Statement, the Rule
462(b) Registration Statement and any amendments and supplements thereto
complied or will comply in all material respects with the requirements of the

                                        8

<PAGE>

1933 Act and the 1933 Act Regulations and did not and will not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein not misleading.
The Prospectus and any supplements or amendments thereto will not at the date of
the Prospectus, at the date of any such supplements or amendments, or at the
Closing Date or the Option Closing Date, if any, include an untrue statement of
a material fact or omit to state a material fact necessary in order to make the
statements therein, in the light of the circumstances under which they were
made, not misleading.  If Rule 434 is used, the Company will comply with the
requirements of Rule 434 and the Prospectus shall not be "materially different,"
as such term is used in Rule 434, from the Prospectus included in the
Registration Statement at the time it became effective.  The representations and
warranties in this subsection shall not apply to statements in or omissions from
the Registration Statement or Prospectus relating to any Underwriter made in
reliance upon and in conformity with information furnished to the Company in
writing by any Underwriter, through Vector expressly for use in the Registration
Statement or Prospectus.  The Company has not distributed any offering materials
in connection with the offering or sale of the Securities other than the
Registration Statement, the preliminary prospectus, the Prospectus, the Term
Sheet, if applicable, or any other materials, if any, permitted by the 1933 Act
or the 1933 Act Regulations.

               b.  Each preliminary prospectus and the prospectus filed as part
of the Registration Statement as originally filed or as part of any amendment
thereto, or filed pursuant to Rule 424 under the 1933 Act, complied when so
filed in all material respects with the 1933 Act Regulations and, if applicable,
each preliminary prospectus and the Prospectus delivered to the Underwriters for
use in connection with this offering was identical to the electronically
transmitted copies thereof filed with the Commission pursuant to EDGAR, except
to the extent permitted by Regulation S-T.

               c.  The accountants who certified the financial statements and
supporting schedules included in the Registration Statement are independent
public accountants as required by the 1933 Act and the 1933 Act Regulations.

               d.  The financial statements included in the Registration
Statement and the Prospectus present fairly the financial position of the
Company as of the dates indicated and the results of their operations for the
periods specified; except as otherwise stated in the Registration Statement,
said financial statements have been prepared in conformity with generally
accepted accounting principles applied on a consistent basis; and the supporting
schedules included in the Registration Statement present fairly the information
required to be stated therein.  The financial information and statistical data
set forth in the Prospectus are prepared on an accounting basis consistent with
such financial statements.

                                        9

<PAGE>

               e.  Since the respective dates as of which information is given
in the Registration Statement and the Prospectus, except as otherwise stated
therein, (i) there has been no material adverse change or any development
involving a prospective material adverse change in or affecting the condition,
financial or otherwise, or in the earnings, business affairs or business
prospects of the Company, whether or not arising in the ordinary course of
business, (ii) there have been no transactions entered into by the Company,
other than those in the ordinary course of business, which are material with
respect to the Company, and (iii) there has been no dividend or distribution of
any kind declared, paid or made by the Company on any class of its capital
stock.  The Company has no material contingent obligations which are not
disclosed in the Registration Statement.

               f.  The Company has been duly incorporated and is validly
existing as a corporation in good standing under the laws of the State of
California with corporate power and authority to own, lease and operate its
properties and to conduct its business as described in the Prospectus and to
enter into and perform its obligations under this Agreement; and the Company is
duly qualified as a foreign corporation to transact business and is in good
standing in each jurisdiction in which such qualification is required, whether
by reason of the ownership or leasing of property or the conduct of business,
except where the failure to so qualify would not, singly or in the aggregate,
have a material adverse effect on the condition, financial or otherwise, or the
earnings, business affairs or business prospects of the Company.

               g.  The authorized, issued and outstanding capital stock of the
Company is as set forth in the Prospectus under "Capitalization" (except for
subsequent issuances, if any, pursuant to this Agreement or pursuant to
reservations, agreements, employee or director benefit plans or the exercise of
convertible securities referred to in the Prospectus); the shares of issued and
outstanding capital stock of the Company have been duly authorized and validly
issued and are fully paid and non-assessable and have not been issued in
violation of or are not otherwise subject to any preemptive or other similar
rights; the Securities have been duly authorized for issuance and sale to the
Underwriters pursuant to this Agreement and, when issued and delivered by the
Company pursuant to this Agreement against payment of the consideration set
forth herein, will be validly issued and fully paid and non-assessable; the
certificates evidencing the Securities are in due and proper form under
California law; the authorized capital stock of the Company, including the
Securities, conforms to all statements relating thereto contained in the
Prospectus; and the issuance of the Securities is not subject to preemptive or
other similar rights.  There are no outstanding subscriptions, options,
warrants, convertible or exchangeable securities or other rights granted to or
by the Company to purchase shares of Common Stock or other securities of the
Company and there are no commitments, plans or arrangements to issue any shares
of Common Stock or any security convertible into or exchangeable for Common
Stock, in each case other than as described in the Prospectus.  Except as
described in

                                       10

<PAGE>

the Prospectus, the Company does not own, directly or indirectly, any shares of
stock of any other entity or long-term debt securities of any corporation or
have any equity interest in any firm, partnership, joint venture, association or
other entity.

               h.  Except as disclosed in the Registration Statement and except
as would not, singly or in the aggregate, reasonably be expected to have a
material adverse effect on the condition, financial or otherwise, or the
earnings, business affairs or business prospects of the Company, (A) the Company
is in compliance with all applicable Environmental Laws, (B) the Company has all
permits, authorizations and approvals required under any applicable
Environmental Laws and is in compliance with the requirements of such permits
authorizations and approvals, (C) there are no pending or, to the best knowledge
of the Company, threatened Environmental Claims against the Company and (D)
under applicable law, there are no circumstances with respect to any property or
operations of the Company that are reasonably likely to form the basis of an
Environmental Claim against the Company.

          For purposes of this Agreement, the following terms shall have the
following meanings:  "Environmental Law" means any United States (or other
applicable jurisdiction's) Federal, state, local or municipal statute, law,
rule, regulation, ordinance, code, policy or rule of common law and any judicial
or administrative interpretation thereof, including any judicial or
administrative order, consent decree or judgement, relating to the environment,
health, safety or any chemical, material or substance, exposure to which is
prohibited, limited or regulated by any governmental authority.  "Environmental
Claims" means any and all administrative, regulatory or judicial actions, suits,
demands, demand letters, claims, liens, notices of noncompliance or violation,
investigations or proceedings relating in any way to any Environmental Law.

               i.  The Company is not in violation of its charter or in default
in the performance or observance of any material obligation, agreement, covenant
or condition contained in any contract, indenture, mortgage, loan agreement,
deed, trust, note, lease, sublease, voting agreement, voting trust, or other
instrument or agreement to which the Company is a party or by which it may be
bound, or to which any of the property or assets of the Company is subject; and
the execution, delivery and performance of this Agreement and the consummation
of the transactions contemplated herein and compliance by the Company with its
obligations hereunder have been duly authorized by all necessary corporate
action and will not conflict with or constitute a breach of, or default under,
or result in the creation or imposition of any lien, charge or encumbrance upon
any property or assets of the Company pursuant to, any contract, indenture,
mortgage, loan agreement, deed, trust, note, lease, sublease, voting agreement,
voting trust or other instrument or agreement to which the Company is a party or
by which it may be bound, or to which any of the property or assets of the
Company is subject, nor will such action result in any violation of the
provisions of the charter or bylaws of the Company

                                       11

<PAGE>

or any applicable statute, law, rule, regulation, ordinance, decision, directive
or order.

               j.  No labor dispute with the employees of the Company exists or,
to the best knowledge of the Company, is imminent; and the Company is not aware
of any existing or imminent labor disturbance by the employees of any of its
principal suppliers, manufacturers or contractors which might, singly or in the
aggregate, be expected to result in any material adverse change in the
condition, financial or otherwise, or in the earnings, business affairs or
business prospects of the Company.

               k.  There is no action, suit or proceeding before or by any court
or governmental agency or body, domestic or foreign, now pending, or, to the
knowledge of the Company, threatened, against or affecting the Company, which is
required to be disclosed in the Registration Statement (other than as disclosed
therein), or which, singly or in the aggregate, might result in any material
adverse change in the condition, financial or otherwise, or in the earnings,
business affairs or business prospects of the Company, or which, singly or in
the aggregate, might materially and adversely affect the properties or assets
thereof or which might materially and adversely affect the consummation of this
Agreement; all pending legal or governmental proceedings to which the Company is
a party or of which any of its property or assets is the subject which are not
described in the Registration Statement, including ordinary routine litigation
incidental to the business, are, considered in the aggregate, not material; and
there are no contracts or documents of the Company which are required to be
filed as exhibits to the Registration Statement by the 1933 Act or by the 1933
Act Regulations which have not been so filed.

               l.  The Company owns or is licensed to use all patents, patent
applications, inventions, trademarks, trade names, applications for registration
of trademarks, service marks, service mark applications, copyrights, know-how,
manufacturing processes, formulae, trade secrets, licenses and rights in any
thereof and any other intangible property and assets (herein called the
"Proprietary Rights") which are material to the businesses of the Company as now
conducted and as proposed to be conducted, in each case as described in the
Prospectus.  The description of the Proprietary Rights is correct in all
material respects and fairly and correctly describes the Company's rights with
respect thereto.  The Company does not have any knowledge of, and the Company
has not given or received any notice of, any pending conflicts with or
infringement of the rights of others with respect to any Proprietary Rights or
with respect to any license of Proprietary Rights.  No action, suit,
arbitration, or legal, administrative or other proceeding, or investigation is
pending, or, to the best knowledge of the Company, threatened, which involves
any Proprietary Rights.  The Company is not subject to any judgment, order,
writ, injunction or decree of any court or any Federal, state, local, foreign or
other governmental department, commission, board, bureau, agency or
instrumentality, domestic or foreign, or any arbitrator, or has entered into or
is a party to any contract which restricts or impairs the use of

                                       12

<PAGE>

any such Proprietary Rights in a manner which would have a material adverse
effect on the use of any of the Proprietary Rights.  To the best knowledge of
the Company, no Proprietary Rights used by the Company, and no services or
products sold by the Company, conflict with or infringe upon any proprietary
rights available to any third party.  The Company has not received written
notice of any pending conflict with or infringement upon such third-party
proprietary rights.  The Company has not entered into any consent,
indemnification, forbearance to sue or settlement agreement with respect to
Proprietary Rights other than in the ordinary course of business.  No claims
have been asserted by any person with respect to the validity of the Company's
ownership or right to use the Proprietary Rights and, to the best knowledge of
the Company, there is no reasonable basis for any such claim to be successful.
The Proprietary Rights are valid and enforceable and no registration relating
thereto has lapsed, expired or been abandoned or cancelled or is the subject of
cancellation or other adversarial proceedings, and all applications therefore
are pending and are in good standing.  The Company has complied, in all material
respects, with its contractual obligations relating to the protection of the
Proprietary Rights used pursuant to licenses.  To the best knowledge of the
Company, no person is infringing on or violating the Proprietary Rights owned or
used by the Company.

               m.  No registration, authorization, approval, qualification or
consent of any court or governmental authority or agency is necessary in
connection with the offering, issuance or sale of the Securities hereunder,
except such as may be required under the 1933 Act or the 1933 Act Regulations or
state securities or Blue Sky laws (or such as may be required by the National
Association of Securities Dealers, Inc. ("NASD")).

               n.  The Company possesses and is operating in compliance with all
licenses, certificates, consents, authorities, approvals and permits
(collectively, "permits") from all state, Federal, foreign and other regulatory
agencies or bodies necessary to conduct the businesses now operated by it, and
the Company has not received any notice of proceedings relating to the
revocation or modification of any such permit or any circumstance which would
lead it to believe that such proceedings are reasonably likely which, singly or
in the aggregate, if the subject of an unfavorable decision, ruling or finding,
would materially and adversely affect the condition, financial or otherwise, or
the earnings, business affairs or business prospects of the Company.

               o.  This Agreement has been duly executed and delivered by the
Company and constitutes a valid and binding obligation of the Company,
enforceable against the Company in accordance with its terms, except as rights
to indemnity and contribution hereunder may be limited by Federal or state
securities laws or the public policy underlying such laws.

               p.  Except as described in the Prospectus, there are no persons
with registration or other similar rights to have any

                                       13

<PAGE>

securities registered pursuant to the Registration Statement or otherwise
registered by the Company under the 1933 Act.

               q.  No order preventing or suspending the use of any preliminary
prospectus has been issued and no proceedings for that purpose are pending,
threatened, or, to the knowledge of the Company, contemplated by the Commission;
and to the best knowledge of the Company, no order suspending the offering of
the Securities in any jurisdiction designated by the Underwriters pursuant to
Section 5(g) of this Agreement has been issued and, to the best knowledge of the
Company, no proceedings for that purpose have been instituted or threatened or
are contemplated.

               r.  The Company has good and marketable title to its properties,
free and clear of all material security interests, mortgages, pledges, liens,
charges, encumbrances, claims and equities of record.  The properties of the
Company are, in the aggregate, in good repair (reasonable wear and tear
excepted), and suitable for its respective uses.  Any real properties held under
lease by the Company is held by it under valid, subsisting and enforceable
leases with such exceptions as are not material and do not interfere with the
conduct of the business of the Company.

               s.  The Company maintains a system of internal accounting
controls sufficient to provide reasonable assurances that (i) transactions are
executed in accordance with management's general or specific authorization, (ii)
transactions are recorded as necessary to permit preparation of financial
statements in conformity with generally accepted accounting principles and to
maintain accountability for assets, (iii) access to assets is permitted only in
accordance with management's general or specific authorization, and (iv) the
recorded accountability for assets is compared with the existing assets at
reasonable intervals and appropriate action is taken with respect to any
differences.

               t.  The Company has conducted and is conducting its business in
compliance with all applicable Federal, state, local and foreign statutes, laws,
rules, regulations, ordinances, codes, decisions, decrees, directives and
orders, except where the failure to do so would not, singly or in the aggregate,
have a material adverse effect on the condition, financial or otherwise, or on
the earnings, business affairs or business prospects of the Company.

               u.  To the best of the Company's knowledge, neither the Company
nor any employee or agent of the Company has made any payment of funds of the
Company or received or retained any funds in violation of any law, rule or
regulation, which payment, receipt or retention of funds is of a character
required to be disclosed in the Prospectus.

               v.  The Company is not now, and after sale of the Securities to
be sold by it hereunder and application of the net proceeds from such sale as
described in the Prospectus under the caption "Use of Proceeds" will not be, an
"investment company"

                                       14

<PAGE>

within the meaning of the Investment Company Act of 1940, as amended.

               w.  All offers and sales of capital stock of the Company prior to
the date hereof were at all relevant times duly registered or exempt from the
registration requirements of the 1933 Act and were duly registered or subject to
an available exemption from the registration requirements of the applicable
state securities or Blue Sky laws.

               x.  The Company has complied with all provisions of Florida H.B.
1771, codified as Section 517.075 of the Florida statutes, and all regulations
promulgated thereunder relating to issuers doing business with Cuba.

               y.  The Common Stock is registered pursuant to Section 12(g) of
the 1934 Act.  The Securities have been duly authorized for quotation on NASDAQ.
The Company has taken no action designed to, or likely to have the effect of,
terminating the registration of the Common Stock under the 1934 Act or delisting
the Common Stock from NASDAQ, nor has the Company received any notification that
the Commission or NASDAQ is contemplating terminating such registration or
listing.

               z.  Neither the Company  nor, to its knowledge, any of its
officers, directors or affiliates has taken, and at the Closing Date and at any
later Option Closing Date, neither the Company nor, to its knowledge, any of its
officers, directors or affiliates will have taken, directly or indirectly, any
action which has constituted, or might reasonably be expected to constitute, the
stabilization or manipulation of the price of sale or resale of the Securities.

               aa.  The Company maintains insurance of the types and in amounts
adequate for its business and consistent with insurance coverage maintained by
similar companies in similar business, including but not limited to, insurance
covering clinical trial liability, product liability and real and personal
property owned or leased against theft, damage, destruction, acts of vandalism
and all other risks customarily insured against, all of which insurance is in
full force and effect.

               ab.  The Company has filed all material tax returns required to
be filed, which returns are true and correct in all material respects, and the
Company is not in default in the payment of any taxes, including penalties and
interest, assessments, fees and other charges, shown thereon due or otherwise
assessed, other than those being contested in good faith and for which adequate
reserves have been provided or those currently payable without interest which
were payable pursuant to said returns or any assessments with respect thereto.

               ac.  Except as described in the Prospectus, to the best of the
Company's knowledge, there are no rulemaking or similar proceedings before The
United States Food and Drug Administration

                                       15

<PAGE>

or comparable Federal, state, local or foreign government bodies which involve
or affect the Company, which, if the subject of an action unfavorable to the
Company, could involve a prospective material adverse change in or effect on the
condition, financial or otherwise, or in the earnings, business affairs or
business prospects of the Company.

               ad.  The Company has not received any communication (whether
written or oral) relating to the termination or threatened termination or
modification or threatened modification of any material, consulting, licensing,
marketing, research and development, cooperative or any similar agreement,
including, without limitation, the collaborative research and license agreements
listed under the section of the Prospectus entitled, "Strategic Relationships."
Each such collaborative and licensing agreement is in effect substantially as
described in such section of the Prospectus.

               ae.  To the knowledge of the Company, if any full-time employee
identified in the Prospectus has entered into any non-competition, non-
disclosure, confidentiality or other similar agreement with any party other than
the Company, such employee is neither in violation thereof nor is expected to be
in violation thereof as a result of the business conducted or expected to be
conducted by the Company as described in the Prospectus or such person's
performance of his obligations to the Company; and the Company has not received
written notice that any consultant or scientific advisor of the Company is in
violation of any non-competition, non-disclosure, confidentiality or similar
agreement.

          7.   INDEMNIFICATION AND CONTRIBUTION.


               a.  The Company agrees to indemnify and hold harmless (i) each
Underwriter and (ii) each person, if any, who controls any Underwriter within
the meaning of Section 15 of the 1933 Act (any of the persons referred to in
this clause (ii) being hereinafter referred to as a "controlling person") and
(iii) the respective directors, officers, partners and employees of any of the
Underwriters or any controlling person (any person referred to in clause (i),
(ii) or (iii) may hereinafter be referred to as an "Indemnified Person") to the
fullest extent lawful, from and against any and all losses, claims, damages,
liabilities and expenses whatsoever (including, without limitation, all
reasonable costs of pursuing, investigating and defending any claim, suit or
action or any investigation or proceeding by any governmental agency or body,
commenced or threatened, including the reasonable fees and expenses of counsel
to any Indemnified Person), directly or indirectly, caused by, related to, based
upon or arising out of or in connection with any untrue statement or alleged
untrue statement of a material fact contained in the Registration Statement or
any amendment thereto, including the Rule 430A Information and Rule 434
Information, if applicable, or any omission or alleged omission to state therein
a material fact required to be stated therein or necessary to make the
statements therein not misleading or caused by, related to, based upon,

                                       16

<PAGE>

arising out of or in connection with any untrue statement or alleged untrue
statement of a material fact contained in any preliminary prospectus or the
Prospectus (or any amendment or supplement thereto) or any omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading, except insofar as such losses,
claims, damages, liabilities or expenses arise out of or are based upon any
untrue statement or omission or alleged untrue statement or omission which has
been made therein or omitted therefrom in reliance upon and in conformity with
the information relating to such Underwriter furnished in writing to the Company
by or on behalf of any Underwriter through you expressly for use in connection
therewith.

               b.  If any action, suit or proceeding shall be brought against
any Indemnified Person in respect of which indemnity may be sought against the
Company, such Indemnified Person shall promptly notify the parties against whom
indemnification is being sought (the "indemnifying parties"), and such
indemnifying parties shall assume the defense thereof, including the employment
of counsel and payment of all fees and expenses.  Such Indemnified Person shall
have the right to employ separate counsel in any such action, suit or proceeding
and to participate in the defense thereof, but the fees and expenses of such
counsel shall be at the expense of such Indemnified Person unless (i) the
indemnifying parties have agreed in writing to pay such fees and expenses, (ii)
the indemnifying parties have failed to assume the defense and employ counsel or
(iii) the named parties to any such action, suit, investigation or proceeding
(including any impleaded parties) include both such Indemnified Person and the
indemnifying parties and representation of such Indemnified Person and any
indemnifying party by the same counsel would, in the reasonable judgment of the
Indemnified Person, be inappropriate due to actual or potential differing
interests between them (in which case the indemnifying party shall not have the
right to assume the defense of such action, suit or proceeding on behalf of such
Indemnified Person).  It is understood, however, that the indemnifying parties
shall, in connection with any one such action, suit or proceeding or separate
but substantially similar or related actions, suits or proceedings in the same
jurisdiction arising out of the same general allegations or circumstances, be
liable for the reasonable fees and expenses of only one separate firm of
attorneys (in addition to any local counsel) at any time for all such
Indemnified Persons not having actual or potential differing interests with you
or among themselves, which firm shall be designated in writing by Vector, and
that all such fees and expenses shall be reimbursed as they are incurred.  The
indemnifying parties shall not be liable for any settlement of any such action,
suit or proceeding effected without their written consent, which consent shall
not be unreasonably withheld, but if settled with such written consent, or if
there be a final judgment for the plaintiff in any such action, suit or
proceeding, the indemnifying parties agree to indemnify and hold harmless any
Indemnified Person, to the extent provided in the

                                       17

<PAGE>

preceding paragraph, from and against any loss, claim, damage, liability or
expense by reason of such settlement or judgment.

               c.  Each Underwriter agrees, severally and not jointly, to
indemnify and hold harmless the Company, its directors, its officers who sign
the Registration Statement, any person who controls the Company within the
meaning of Section 15 of the 1933 Act, to the same extent as the foregoing
indemnity from the Company to each Indemnified Person, but only with respect to
information relating to such Underwriter furnished in writing by or on behalf of
such Underwriter through Vector expressly for use in the Registration Statement,
the Prospectus or any preliminary prospectus, or any amendment or supplement
thereto.  If any action, suit, investigation or proceeding shall be brought
against the Company, any of its directors, any such officer or any such
controlling person based on the Registration Statement, the Prospectus or any
preliminary prospectus, or any amendment or supplement thereto, and in respect
of which indemnity may be sought against any Underwriter pursuant to this
paragraph (c), such Underwriter shall have the rights and duties given to the
Company by paragraph (b) above, and the Company, its directors, any such officer
and any such controlling person shall have the rights and duties given to the
Indemnified Persons by paragraph (a) above.

               d.  If the indemnification provided for in this Section 7 is
unavailable to, or insufficient to hold harmless, an indemnified party under
paragraphs (a) or (c) hereof in respect of any losses, claims, damages,
liabilities or expenses referred to therein, then each indemnifying party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or payable by such indemnified party as a result of such losses, claims,
damages, liabilities or expenses (i) in such proportion as is appropriate to
reflect the relative benefits received by the Company on the one hand and the
Underwriters on the other hand from the offering of the Securities or (ii) if
the allocation provided by clause (i) above is not permitted by applicable law
or judicial determination, in such proportion as is appropriate to reflect not
only the relative benefits referred to in clause (i) above but also the relative
fault of the Company on the one hand and the Underwriters on the other hand, as
well as any other relevant equitable considerations.  The relative benefits
received by the Company on the one hand and the Underwriters on the other hand
shall be deemed to be in the same proportion as the total net proceeds from the
offering (before deducting expenses) received by the Company bear to the total
underwriting discounts and commissions received by the Underwriters, in each
case as set forth in the table on the cover page of the Prospectus or, if Rule
434 is used, the corresponding location on the Term Sheet.  The relative fault
of the Company on the one hand and the Underwriters on the other hand shall be
determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to state
a material fact relates to information supplied by the Company on the one hand
or by the Underwriters on the other hand and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement

                                       18

<PAGE>

or omission.  The indemnity and contribution obligations of the Company  set
forth herein shall be in addition to any liability or obligation the Company may
otherwise have to any Indemnified Person.

               e.  The Company and the Underwriters agree that it would not be
just and equitable if contribution pursuant to this Section 7 were determined by
a PRO RATA allocation (even if the Underwriters were treated as one entity for
such purpose) or by any other method of allocation that does not take account of
the equitable considerations referred to in the immediately preceding paragraph.
The amount paid or payable by an indemnified party as a result of the losses,
claims, damages, liabilities and expenses referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any legal or other expenses reasonably incurred by such indemnified
party in connection with investigating any claim or defending any such action,
suit or proceeding.  Notwithstanding the provisions of this Section 7, no
Underwriter (or any of its related Indemnified Persons) shall be required to
contribute (whether pursuant to subsection (a) or (c) or otherwise) any amount
in excess of the underwriting discount applicable to the Securities underwritten
by such Underwriter.  No person guilty of fraudulent misrepresentation (within
the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution
from any person who was not guilty of such fraudulent misrepresentation.  The
Underwriters' obligations to contribute pursuant to this Section 7 are several
in proportion to the respective numbers of Securities set forth opposite their
names in Schedule I hereto (or such numbers of Securities increased as set forth
in Section 10 hereof) and not joint.

               f.  No indemnifying party shall, without the prior written
consent of the Indemnified Person, effect any settlement of any pending or
threatened action, suit or proceeding in respect of which any Indemnified Person
is or could have been a party and indemnity could have been sought hereunder by
such Indemnified Person, unless such settlement includes an unconditional
release of such Indemnified Person from all liability on claims that are the
subject matter of such action, suit or proceeding.

               g.  Any losses, claims, damages, liabilities or expenses for
which an indemnified party is entitled to indemnification or contribution under
this Section 7 shall be paid by the indemnifying party to the indemnified party
as such losses, claims, damages, liabilities or expenses are incurred.  The
indemnity and contribution agreements contained in this Section 7 and the
representations and warranties of the Company set forth in this Agreement shall
remain operative and in full force and effect, regardless of (i) any
investigation made by or on behalf of any Indemnified Person, the Company, its
directors or officers or any person controlling the Company, (ii) acceptance of
any Securities and payment therefor hereunder and (iii) any termination of this
Agreement.

                                       19

<PAGE>

          8.   CONDITIONS OF UNDERWRITERS' OBLIGATIONS.  The several obligations
of the Underwriters to purchase the Initial Securities hereunder are subject to
the following conditions:

               a.  The Registration Statement, including any Rule 462(b)
Registration Statement, shall have become effective on the date hereof; no stop
order suspending the effectiveness of the Registration Statement shall have been
issued under the 1933 Act or proceedings therefor initiated or threatened by the
Commission.  If the Company has elected to rely upon Rule 430A, Rule 430A
Information previously omitted from the effective Registration Statement
pursuant to Rule 430A shall have been transmitted to the Commission for filing
pursuant to Rule 424(b) within the prescribed time period and the Company shall
have provided evidence satisfactory to the Underwriters of such timely filing,
or a post-effective amendment providing such information shall have been
promptly filed and declared effective in accordance with the requirements of
Rule 430A.  If the Company has elected to rely upon Rule 434, a Term Sheet shall
have been transmitted to the Commission for filing pursuant to Rule 424(b)
within the prescribed time period.

               b.  The Underwriters shall have received:

                    (i)  The favorable opinion, dated as of the Closing Date, of
     Wilson Sonsini Goodrich & Rosati, counsel for the Company, in form and
     substance satisfactory to counsel for the Underwriters, to the effect that:

               A.  The Company has been duly incorporated and is validly
          existing as a corporation in good standing under the laws of the State
          of California.

               B.  The Company has corporate power and authority to own, lease
          and operate its properties and to conduct its business as described in
          the Registration Statement and the Prospectus and to enter into and
          perform its obligations under this Agreement.

               C.  To the best of their knowledge and information, the Company
          is duly qualified as a foreign corporation to transact business and is
          in good standing in each jurisdiction in which such qualification is
          required.

               D.  The authorized, issued and outstanding capital stock of the
          Company is as set forth in the Prospectus under "Capitalization"
          (except for subsequent issuances, if any, pursuant to reservations,
          agreements, employee benefit plans or the exercise of convertible
          securities referred to in the Prospectus), and the shares of issued
          and outstanding capital stock of the Company, including the Common
          Stock, have been duly authorized and validly issued and are fully paid
          and non-assess-

                                       20

<PAGE>

          able and, to their knowledge and information, have not been issued in
          violation of or are not otherwise subject to any preemptive rights or
          other similar rights.

               E.  The Securities have been duly authorized for issuance and
          sale to the Underwriters pursuant to this Agreement and, when issued
          and delivered by the Company pursuant to this Agreement against
          payment of the consideration set forth herein, will be validly issued
          and fully paid and non-assessable; and the issuance of the Securities
          is not subject to preemptive or other similar rights.

               F.  To the best of their knowledge and information, except as
          described in the Prospectus, there are no outstanding options,
          warrants or other rights granted to or by the Company to purchase
          shares of Common Stock or other securities of the Company and there
          are no commitments, plans or arrangements to issue any shares of
          Common Stock or other securities.

               G.  This Agreement has been duly authorized, executed and
          delivered by the Company.

               H.  At the time the Registration Statement became effective and
          at the Closing Date, the Registration Statement (other than the
          financial statements and supporting schedules included therein, as to
          which no opinion need be rendered) complied as to form in all material
          respects with the requirements of the 1933 Act and the 1933 Act
          Regulations.

               I.  The form of certificate used to evidence each of the
          Securities is in due and proper form and complies with all applicable
          statutory requirements.

               J.  To the best of their knowledge and information, there are no
          legal or governmental proceedings pending or threatened which are
          required to be disclosed in the Registration Statement other than
          those disclosed therein, and all pending legal or governmental
          proceedings to which the Company is a party or to which any of its
          property is subject which are not described in the Registration
          Statement, including ordinary routine litigation incidental to the
          business, are, considered in the aggregate, not material.

               K.The information in the Prospectus under "Risk Factors--Shares
          Eligible for Future Sale; Registration Rights," "Certain Relationships
          and

                                       21

<PAGE>

          Related Transactions," "Business--Strategic Relationships," --
          Government Regulation," "Management--Director Compensation," "--1988
          Stock Incentive Program," "--Employee Stock Purchase Plan," "--401(k)
          Plan," "--Employment Agreements and Change in Control Arrangements,"
          "Limitation on Liability and Indemnification Matters" and "Description
          of Capital Stock," to the extent that it constitutes matters of law,
          summaries of legal matters, documents or proceedings, or legal
          conclusions, has been reviewed by them and is correct in all material
          respects and fairly and correctly presents the information called for
          with respect thereto.


               L.  To the best of their knowledge and information, there are no
          contracts, indentures, mortgages, loan agreements, deeds, trusts,
          notes, leases, subleases, voting trusts, voting agreements or other
          instruments or agreements required to be described or referred to in
          the Registration Statement or to be filed as exhibits thereto other
          than those described or referred to therein or filed as exhibits
          thereto, the descriptions thereof or references thereto are correct;
          and to the best of their knowledge and information, no default exists
          in the due performance or observance of any material obligation,
          agreement, covenant or condition contained in any material contract,
          indenture, mortgage, loan agreement, deed, trust, note, lease,
          sublease, voting trust, voting agreement or other instrument or
          agreement of the Company.

               M.  No authorization, approval, consent or order of any court or
          governmental authority or agency is required in connection with the
          offering, issuance or sale of the Securities to the Underwriters,
          except such as may be required under the 1933 Act or the 1933 Act
          Regulations or state securities or Blue Sky laws or such as may be
          required by the NASD; and the execution, delivery and performance of
          this Agreement and the consummation of the transactions contemplated
          herein and the compliance by the Company with its obligations
          hereunder will not conflict with or constitute a breach of, or default
          under, or result in the creation or imposition of any lien, charge or
          encumbrance upon any property or assets of the Company pursuant to,
          any contract, indenture, mortgage, loan agreement, note, deed, trust,
          lease, sublease, voting trust, voting agreement or other instrument or
          agreement to which the Company is a party or by which it may be bound,
          or to which any of the property or assets of the Company is subject,
          nor will such action result in any violation of the provisions of the
          charter or bylaws of the Company, or

                                       22

<PAGE>

          any applicable statute, law, rule, regulation, ordinance, code,
          decision, directive or order.

               N.  To the best of their knowledge and information, the Company
          possesses and is in compliance with all permits issued by the
          appropriate regulatory body or agency, including the Food and Drug
          Administration and any foreign regulatory agency performing similar
          functions, necessary to conduct the businesses now operated by it,
          except where the failure to so possess or comply with any permit would
          not have, singly or in the aggregate, a material adverse effect on the
          business or condition, financial or otherwise, of the Company.  To the
          best of their knowledge and information, there are no proceedings,
          pending or threatened, which if the subject of an unfavorable
          decision, ruling or finding, would have a material adverse effect on
          the business or condition, financial or otherwise, of the Company.

               O.  Except as described in the Prospectus, to the best of their
          knowledge and information, there are no persons with registration or
          other similar rights to have any securities registered pursuant to the
          Registration Statement or otherwise registered by the Company under
          the 1933 Act.

               P.  The Company is not an "investment company" or a company
          "controlled" by an "investment company" within the meaning of the
          Investment Company Act of 1940, as amended.

               Q.  To the best of their knowledge and information, the Company
          is in compliance with, and conducts its business in conformity with,
          all applicable laws and regulations relating to the operation of its
          business as described in the Registration Statement, except to the
          extent that any failure so to comply or conform would not have a
          material adverse effect upon the business or condition, financial or
          otherwise, of the Company.

               R.  The Registration Statement has become effective under the
          1933 Act; any required filing of the Prospectus, and any supplements
          thereto or the Term Sheet, pursuant to Rule 424(b) and if applicable,
          Rule 434, has been made in the manner and within the time period
          required; and to their best knowledge and information, no stop order
          suspending the effectiveness of the Registration Statement or any part
          thereof has been issued and no proceedings therefor have been
          instituted or are pending or contemplated under the 1933 Act.

                                       23

<PAGE>

                    (ii)  The favorable opinion, dated as of the Closing Date,
     of _______________, patent counsel for the Company, in form and substance
     satisfactory to counsel for the Underwriters, to the effect that:

               A.  To the best of their knowledge, the information in the
          Prospectus under "Risk Factors--Uncertainty of Patent Position and
          Proprietary Technology Protection; Need to License Technology of Third
          Parties" and "--Patents and Proprietary Rights," to the extent that it
          constitutes matters of law, summaries of legal matters, documents or
          proceedings, or legal conclusions, has been reviewed by them and is
          correct in all material respects and fairly and correctly presents the
          information called for with respect thereto.

               B.  To the best of their knowledge, there are no pending or
          threatened legal or governmental proceedings, nor allegations on the
          part of any person of infringement, relating to patent rights, trade
          secrets, trademarks, service marks, copyrights or other proprietary
          information or know-how of the Company and, to the best of their
          knowledge, no such proceedings are threatened or contemplated;

               C.  To the best of their knowledge, the Company is not infringing
          or otherwise violating any patents, trade secrets, trademarks, service
          marks, copyrights or other proprietary information or know-how of any
          persons, and no person is infringing or otherwise violating any of the
          Company's patents, trade secrets, trademarks, service marks,
          copyrights or other proprietary information or know-how of the Company
          in a way which could materially affect the use thereof by the Company;

               D.  To the best of their knowledge, the Company owns or possesses
          sufficient licenses or other rights to use all patents, trade secrets,
          trademarks, service marks or other proprietary information or know-how
          necessary to conduct the business now being or proposed to be
          conducted by the Company as described in the Prospectus;

               E.  The Company is listed in the records of the United States
          Patent and Trademark Office ("PTO") as the sole assignee of record of
          each of the patents listed on Schedule I hereto (herein called the
          "Patents") and each of the applications listed on Schedule II hereto
          (herein called the "Applications").  To the best of their knowledge,
          there are no asserted or unasserted claims of any persons relating to
          the scope or ownership of the Patents or the Applications, there are
          no liens

                                       24

<PAGE>

          which have been filed against any of the Patents or the Applications,
          there are no material defects of form in the preparation or filing of
          the Applications, the Applications are being diligently prosecuted,
          and none of the Applications has been finally rejected or abandoned;

               F.  The Company is listed in the records of the appropriate
          foreign patent offices as the sole assignee of record of each of the
          foreign patents listed on Schedule III hereto (herein called the
          "Foreign Patents") and each of the foreign applications listed on
          Schedule IV hereto (herein called the "Foreign Applications").  To the
          best of their knowledge, there are no asserted or unasserted claims of
          any persons relating to the scope or ownership of the Foreign Patents
          or the Foreign Applications, there are no liens which have been filed
          against any of the Foreign Patents or the Foreign Applications, there
          are no material defects of form in the preparation or filing of the
          Foreign Applications, the Foreign Applications are being diligently
          prosecuted, and none of the Foreign Applications has been finally
          rejected or abandoned;

               G.  Nothing has come to their attention that leads them to
          believe that the Applications and the Foreign Applications will not
          eventuate in issued patents, or that any patents issued in respect of
          any such Applications or Foreign Applications will not be valid or
          will not afford the Company reasonable patent protection relative to
          the subject matter thereof;

               H.  The Company is the non-exclusive licensee of the United
          States and foreign patents and patent applications listed on Schedule
          V and is the exclusive licensee of the United States and foreign
          patents and patent applications listed on Schedule VI.  All such
          licenses are duly executed, validly binding and enforceable in
          accordance with their terms and, to the best of their knowledge, the
          Company is not in default (declared or undeclared) of any material
          provision of any such licenses;

               I.  To the best of their knowledge, all pertinent prior art
          references known to the Company or its counsel during the prosecution
          of the Patents and the Applications were disclosed to the PTO and, to
          the best of their knowledge, neither such counsel nor the Company made
          any misrepresentation to, or concealed any material fact from, the PTO
          during such prosecution;

                                       25


<PAGE>

               J.  To the best of their knowledge, the Company takes security
          measures adequate to assert trade secret protection in its non-
          patented technology;

               K.  The agreements executed by the Company's employees,
          consultants and other advisors respecting trade secrets,
          confidentiality, or intellectual property rights are valid, binding
          and enforceable in accordance with their express terms; and

               L.  Nothing has come to their attention that leads them to
          believe that, with respect to licenses, patents, trade secrets,
          copyrights or other proprietary information or know-how owned or used
          by the Company which are the subject of the foregoing opinions, the
          Registration Statement, at the time it became effective, contained an
          untrue statement of a material fact or omitted to state a material
          fact required to be stated therein or necessary to make the statements
          therein not misleading or that the Prospectus, as of its date (unless
          the term "Prospectus" refers to a prospectus which has been provided
          to the Underwriters by the Company for use in connection with the
          offering of the Securities which differs from the Prospectus on file
          at the Commission at the time the Registration Statement becomes
          effective, in which case at the time it is first provided to the
          Underwriters for such use) or at the Closing Date or the Option
          Closing Date, as the case may be, included or includes an untrue
          statement of a material fact or omitted or omits to state a material
          fact necessary in order to make the statements therein, in the light
          of the circumstances under which they were made, not misleading.

                    (iii)  The favorable opinion, dated as of the Closing Date,
     of Skadden, Arps, Slate, Meagher & Flom, counsel for the Underwriters with
     respect to the issuance and sale of the Securities, the Registration
     Statement and the Prospectus and such other related matters as the
     Underwriters shall reasonably request.

                    (iv)  In giving their opinions required by subsections
     (b)(i) and (b)(iii), respectively, of this Section 8, Wilson Sonsini
     Goodrich & Rosati and Skadden, Arps, Slate, Meagher & Flom shall each
     additionally state that nothing has come to their attention that leads them
     to believe that the Registration Statement (except for financial statements
     and schedules and other financial information included therein, as to which
     counsel need make no statement), at the time it became effective, contained
     an untrue statement of a material fact or omitted to state a material fact
     required to be stated therein or necessary to make the statements therein
     not

                                       26

<PAGE>

     misleading or that the Prospectus (except for financial statements and
     schedules and other financial information included therein, as to which
     counsel need make no statement), as of its date (unless the term
     "Prospectus" refers to a prospectus which has been provided to the
     Underwriters by the Company for use in connection with the offering of the
     Securities which differs from the Prospectus on file at the Commission at
     the time the Registration Statement becomes effective, in which case at the
     time it is first provided to the Underwriters for such use) or at the
     Closing Date or the Option Closing Date, as the case may be, included or
     includes an untrue statement of a material fact or omitted or omits to
     state a material fact necessary in order to make the statements therein, in
     the light of the circumstances under which they were made, not misleading.

               c.  (i) There shall not have been, since the date hereof or since
the respective dates as of which information is given in the Registration
Statement and the Prospectus, any material adverse change or any development
involving a prospective material adverse change in or affecting the condition,
financial or otherwise, or in the earnings, business affairs or business
prospects of the Company, whether or not arising in the ordinary course of
business, (ii) the representations and warranties of the Company in Section 6
hereof shall be true and correct with the same force and effect as though
expressly made at and as of the Closing Date, except to the extent that any such
representation or warranty relates to a specific date, (iii) the Company shall
have complied in all material respects with all agreements and satisfied all
conditions on its part to be performed or satisfied at or prior to the Closing
Date, (iv) no stop order suspending the effectiveness of the Registration
Statement has been issued and no proceedings for that purpose have been
initiated or threatened by the Commission and (v) the Representatives shall have
received a certificate, dated the Closing Date and signed by the President or
any Vice President and the chief financial or accounting officer of the Company
to the effect set forth in clauses (i), (ii), (iii) and (iv) above.

               d.  At the time of the execution of this Agreement, the
Underwriters shall have received from Price Waterhouse LLP a letter dated such
date, in form and substance satisfactory to the Underwriters, together with
signed or reproduced copies of such letter for each of the other Underwriters
containing statements and information of the type ordinarily included in
accountants' "comfort letters" to underwriters with respect to the financial
statements and certain financial information contained in the Registration
Statement and the Prospectus.

               e.  The Underwriters shall have received from Price Waterhouse
LLP a letter, dated as of the Closing Date, to the effect that they reaffirm the
statements made in the letter furnished pursuant to subsection (d) of this
Section, except that

                                       27

<PAGE>

in the specified date referred to shall be a date not more than three business
days prior to the Closing Date.

               f.  The Securities shall have been approved for quotation on
NASDAQ.

               g.  In the event that the Underwriters exercise their option
provided in Section 2 hereof to purchase all or any portion of the Option
Securities, the representations and warranties of the Company contained herein
and the statements in any certificates furnished by the Company hereunder shall
be true and correct as of the Option Closing Date and, at the relevant Option
Closing Date, the Underwriters shall have received:

                         (1)  A certificate, dated such Option Closing Date, of
     the President or any Vice President of the Company and of the chief
     financial or accounting officer of the Company confirming that the
     certificate delivered at the Closing Date pursuant to Section 8 (c) hereof
     remains true and correct as of such Option Closing Date.

                         (2)  The favorable opinion of Wilson Sonsini Goodrich &
     Rosati, in form and substance satisfactory to counsel for the Underwriters,
     dated such Option Closing Date, relating to the Option Securities to be
     purchased on such Option Closing Date and otherwise to the same effect as
     the opinion required by Sections 8 (b)(i) and 8 (b)(iv) hereof.

                         (3)  The favorable opinion of _______________, in form
     and substance satisfactory to counsel for the Underwriters, dated such
     Option Closing Date to the same effect as the opinion required by Section
     8(b)(ii) hereof.

                         (4)  The favorable opinion of Skadden, Arps, Slate,
     Meagher & Flom, counsel for the Underwriters, dated such Option Closing
     Date, relating to the Option Securities to be purchased on such Option
     Closing Date and otherwise to the same effect as the opinion required by
     Sections 8 (b)(iii) and 8 (b)(iv) hereof.

                         (5)  A letter from Price Waterhouse LLP in form and
     substance satisfactory to the Underwriters and dated such Option Closing
     Date, substantially the same in form and substance as the letter furnished
     to the Underwriters pursuant to Section 8(e) hereof, except that the
     "specified date" in the letter furnished pursuant to this Section 8(g)(6)
     shall be a date not more than three business days prior to such Option
     Closing Date.

               h.  At the date of this Agreement, the Underwriters shall have
received lock-up agreements in form and substance

                                       28

<PAGE>

satisfactory to the Underwriters by the persons listed on Schedule B hereto.

               i.  Counsel for the Underwriters shall have been furnished with
such documents and opinions as they may require for the purpose of enabling them
to pass upon the issuance and sale of the Securities as herein contemplated and
related proceedings, or in order to evidence the accuracy of any of the
representations or warranties or the fulfillment of any of the conditions herein
contained; and all proceedings taken by the Company in connection with the
issuance and sale of the Securities as herein contemplated shall be satisfactory
in form and substance to the Underwriters and counsel for the Underwriters.

               j.  The NASD shall not have raised any objection with respect to
the fairness and reasonableness of the underwriting terms and arrangements.

               k.  Any certificate or document signed by any officer of the
Company and delivered to you, as Representatives of the Underwriters, or to
counsel for the Underwriters, shall be deemed a representation and warranty by
the Company to each Underwriter as to the statements made therein.

               l.  If any condition specified in this Section 8 shall not have
been fulfilled when and as required to be fulfilled, this Agreement, or, in the
case of any condition to the purchase of Option Securities, on an Option Closing
Date which is after the Closing Date, the obligations of the several
Underwriters to purchase the relevant Option Securities, may be terminated by
the Representatives by notice to the Company at any time at or prior to Closing
Date or such an Option Closing Date as the case may be, and such termination
shall be without liability of any party to any other party except as provided in
Section 9 and except that Sections 6 and 7 shall survive any such termination
and remain in full force and effect.

          9.  EXPENSES.  The Company agrees to pay the following costs and
expenses and all other costs and expenses incident to the performance by it of
its obligations hereunder:  (i) the preparation, printing or reproduction, and
filing with the Commission of the Registration Statement (including financial
statements and exhibits thereto), each preliminary prospectus, the Prospectus,
and each amendment or supplement to any of them; (ii) the printing (or
reproduction) and delivery (including postage, air freight and charges for
counting and packaging) of such copies of the Registration Statement, each
preliminary prospectus, the Prospectus, and all amendments or supplements to any
of them as may be reasonably requested for use in connection with the offering
and sale of the Securities; (iii) the preparation, printing, authentication,
issuance and delivery of certificates for the Securities, including any stamp
taxes in connection with the original issuance and sale of the Securities; (iv)
the printing (or reproduction) and delivery of this Agreement, the preliminary
and supplemental Blue Sky Memoranda and all other agreements or documents
printed (or

                                       29

<PAGE>

reproduced) and delivered in connection with the original issuance and sale of
the Securities; (v) the quotation of the Securities on NASDAQ; (vi) the
registration or qualification of the Securities for offer and sale under the
securities or Blue Sky laws of the several states as provided in Section 5(g)
hereof (including the reasonable fees, expenses and disbursements of counsel for
the Underwriters relating to the preparation, printing or reproduction, and
delivery of the preliminary and supplemental Blue Sky Memoranda and such
registration and qualification); (vii) the filing fees and the reasonable fees
and expenses of counsel for the Underwriters incident to securing any required
review by the NASD; and (viii) the fees and expenses of the Company's
accountants and the fees and expenses of counsel (including local and special
counsel) for the Company.

          If this Agreement shall terminate or shall be terminated after
execution pursuant to any provisions hereof (otherwise than pursuant to the
second paragraph of Section 10 or pursuant to clauses (ii), (iii), (iv) and (v)
of Section 11 hereof) or if this Agreement shall be terminated by the
Underwriters because of any failure or refusal on the part of the Company to
comply, in any material respect, with the terms or fulfill, in any material
respect, any of the conditions of this Agreement, the Company agrees to
reimburse the Representatives for all reasonable out-of-pocket expenses
(including reasonable fees and expenses of counsel for the Underwriters)
incurred by you in connection herewith.

          10.  EFFECTIVE DATE OF AGREEMENT.  This Agreement shall become
effective: (i) upon the execution and delivery hereof by or on behalf of the
parties hereto; or (ii) if, at the time this Agreement is executed and
delivered, it is necessary for the Registration Statement or a post-effective
amendment thereto to be declared effective before the offering of the Securities
may commence, when notification of the effectiveness of the Registration
Statement or such post-effective amendment has been released by the Commission.
Until such time as this Agreement shall have become effective, it may be
terminated by the Company, by notifying you, or by you, as Representatives of
the several Underwriters, by notifying the Company.

          If one or more of the Underwriters shall fail on the Closing Date to
purchase the Initial Securities which it or they are obligated to purchase under
this Agreement (the "Defaulted Securities"), the Representatives shall have the
right, within 24 hours thereafter, to make arrangements for one or more of the
non-defaulting Underwriters, or any other underwriters, to purchase all, but not
less than all, of the Defaulted Securities in such amounts as may be agreed upon
and upon the terms herein set forth; if, however, the Representatives shall not
have completed such arrangements within such 24-hour period, then:

               a.  if the number of Defaulted Securities does not exceed 10% of
the number of Initial Securities, the non-defaulting Underwriters shall be
obligated to purchase the full amount thereof

                                       30

<PAGE>

in the proportions that their respective underwriting obligations hereunder bear
to the underwriting obligations of all non-defaulting Underwriters, or

               b.  if the number of Defaulted Securities exceeds 10% of the
number of Initial Securities, this Agreement shall terminate without liability
on the part of any non-defaulting Underwriter.

          No action taken pursuant to this Section shall relieve any defaulting
Underwriter from liability in respect of its default.

          In the event of any such default which does not result in a
termination of this Agreement, either the Representatives or the Company shall
have the right to postpone the Closing Date for a period not exceeding seven
days in order to effect any required changes in the Registration Statement or
Prospectus or in any other documents or arrangements.  As used herein, the term
"Underwriter" includes any person substituted for an Underwriter under this
Section 10.

          Any notice under this Section 10 may be given by telegram, telecopy or
telephone but shall be subsequently confirmed by letter.

          11.  TERMINATION OF AGREEMENT.  a. The Underwriters may terminate this
Agreement, by notice to the Company, at any time at or prior to the Closing Date
or Option Closing Date, as the case may be, (i) if there has been, since the
date of this Agreement or since the respective dates as of which information is
given in the Registration Statement, any material adverse change or any
development involving a prospective material adverse change in or affecting the
condition, financial or otherwise, or in the earnings, business affairs or
business prospects of the Company, whether or not arising in the ordinary course
of business, (ii) if there has occurred any change in the financial markets in
the United States or elsewhere or any outbreak of hostilities or escalation
thereof or other calamity or crisis the effect of which is such as to make it,
in your judgement, impracticable or inadvisable to market the Securities or to
enforce contracts for the sale of the Securities, (iii) if trading in the Common
Stock has been suspended by the Commission, or if trading generally on the
American Stock Exchange, the New York Stock Exchange or in the over-the-counter
markets has been suspended, or minimum or maximum prices for trading have been
fixed, or maximum ranges for prices for securities have been required, by such
exchange or markets or by order of the Commission or any other governmental
authority, or if a banking moratorium has been declared by either Federal, New
York or Illinois authorities, (iv) the enactment, publication, decree or other
promulgation of any Federal or state statute, regulation, rule or order of any
court or other governmental authority which in your judgement materially and
adversely affects or may materially or adversely affect the business or
operations of the Company or (v) the taking of any action by any Federal, state

                                       31

<PAGE>

or local government or agency in respect of its monetary or fiscal affairs which
in your judgement has a material adverse effect on the securities markets in the
United States, and would in your judgement make it impracticable or inadvisable
to market the Securities or to enforce any contract for the sale thereof.
Notice of such termination may be given by telegram, telecopy or telephone and
shall be subsequently confirmed by letter.

               b.  If this Agreement is terminated pursuant to this Section 11,
such termination shall be without liability of any party to any other party
except as provided in Section 9 and provided further that Sections 6 and 7 shall
survive such termination and remain in full force and effect.

          12.  INFORMATION FURNISHED BY THE UNDERWRITERS.  The statements set
forth in the last paragraph on the cover page, the stabilization legend on the
inside front cover page, and the statements under the caption "Underwriting" in
any preliminary prospectus and in the Prospectus constitute the only information
furnished by or on behalf of the Underwriters through you as such information is
referred to in Sections 5(a) and 7 hereof.

          13.  MISCELLANEOUS.  Except as otherwise provided in Sections 5, 10
and 11 hereof, notice given pursuant to any provision of this Agreement shall be
in writing and shall be delivered (i) if to the Company at the office of the
Company, at 3347 Investment Boulevard, Hayward, California 94545, Attention:
Warren E. Pinckert II, President and Chief Executive Officer; or (ii) if to you,
as Representatives of the several Underwriters, care of Vector Securities
International, Inc., 1751 Lake Cook Road, Suite 350, Deerfield, Illinois 60015,
Attention:  Syndicate Department.

          14.  APPLICABLE LAW; COUNTERPARTS.  This Agreement shall be governed
by and construed in accordance with the laws of the State of Illinois applicable
to contracts made and to be performed within the State of Illinois.  This
Agreement may be signed in various counterparts which together constitute one
and the same instrument.  If signed in counterparts, this Agreement shall not
become effective unless at least one counterpart hereof shall have been executed
and delivered on behalf of each party hereto.

          15.  SUCCESSORS.  This Agreement has been and is made solely for the
benefit of the several Underwriters, the Company, its directors and officers,
the other persons referred to in Section 7 hereof and their respective
successors and assigns, to the extent provided herein, and no other person shall
acquire or have any right under or by virtue of this Agreement.  Neither the
term "successor" nor the term "successors and assigns" as used in this Agreement
shall include a purchaser from any Underwriter of any of the Securities in his
status as such purchaser.

                                       32

<PAGE>

          Please confirm that the foregoing correctly sets forth the agreement
among the Company and the several Underwriters.

                                                  Very truly yours,

                                                  CHOLESTECH CORPORATION


                                                  By:
                                                      -------------------------
                                                      President and Chief
                                                      Executive Officer

Confirmed as of the date first
above mentioned on behalf of them-
selves and the other several Under-
writers named in Schedule I hereto.

VECTOR SECURITIES INTERNATIONAL, INC.
PRINCIPAL FINANCIAL SECURITIES, INC.

      As Representatives of the
     Several Underwriters

By VECTOR SECURITIES INTERNATIONAL, INC.


By:
    ------------------------------------
               Vice President

                                       33

<PAGE>

                                   SCHEDULE I


                             CHOLESTECH CORPORATION


                                                       Number of Initial
                                                       Securities Purchased
Underwriter. . . . . . . . . . . . . . . . . . . .     from the Company
- -----------                                            --------------------


Vector Securities
 International, Inc. . . . . . . . . . . . . . . .
Principal Financial
 Securities, Inc.. . . . . . . . . . . . . . . . .






Total                                                  ------------------------


<PAGE>

                   [WILSON SONSINI GOODRICH & ROSATI LETTERHEAD]

                                                                    EXHIBIT 5.1

                                    MAY 9, 1996

Cholestech Corporation
3347 Investment Boulevard
Hayward, California 94545
Attn:  Warren E. Pinckert II
       President and Chief Executive Officer

Re:    REGISTRATION STATEMENT ON FORM S-1

Ladies and Gentlemen:

     We have examined the Registration Statement on Form S-1 filed by you 
with the Securities and Exchange Commission (the "COMMISSION") on or about 
the date hereof (the "REGISTRATION STATEMENT") in connection with the 
registration under the Securities Act of 1933, as amended, of 3,450,000 
shares of your Common Stock (the "STOCK"), all of which are authorized but 
heretofore unissued, 450,000 shares of which may be sold pursuant to an 
over-allotment option held by the underwriters.  The Stock is to be sold to 
the underwriters for resale to the public, as described in the Registration 
Statement and pursuant to the Underwriting Agreement filed as an exhibit 
thereto.  As your counsel in connection with this transaction, we have 
examined the proceedings taken and are familiar with the proceedings proposed 
to be taken by you in connection with the sale and issuance of the Stock.

     It is our opinion that, upon completion of the proceedings being taken 
or contemplated by us, as your counsel, to be taken prior to the issuance of 
the Stock, and upon completion of the proceedings being taken in order to 
permit such transactions to be carried out in accordance with the securities 
laws of the various states where required, the Stock when issued and sold in 
the manner referred to in the Registration Statement will be legally and 
validly issued, fully paid and nonassessable.

     We consent to the use of this opinion as an exhibit to the Registration 
Statement, and further consent to the use of our names wherever appearing in 
the Registration Statement, including the Prospectus constituting a part 
thereof, and any amendment thereto.

                                  Very truly yours,

                                  WILSON SONSINI GOODRICH & ROSATI
                                  Professional Corporation
                                  /s/ Wilson Sonsini Goodrich & Rosati P.C.



<PAGE>

                                                                  EXHIBIT 10.15

                                                         CONFIDENTIAL TREATMENT
                                                         REQUESTED

                                METRA BIOSYSTEMS, INC.

                   DEVELOPMENT, LICENSE AND DISTRIBUTION AGREEMENT


    This DEVELOPMENT, LICENSE, AND DISTRIBUTION AGREEMENT (the "AGREEMENT") is
entered into as of the third day of May, 1996 (the "EFFECTIVE DATE") by and
between METRA BIOSYSTEMS, INC., a California corporation having a principal
place of business at 265 North Whisman Road, Mountain View, California 94043
("METRA"), and CHOLESTECH CORPORATION, a California corporation having a
principal place of business at 3347 Investment Blvd., Hayward, CA  94545-3877
("CHOLESTECH"), with reference to the following:

                                       RECITALS

    WHEREAS Metra is a biomedical company in the business of developing and
marketing diagnostics, including biochemical markers and reagents, for
connective tissue diseases;

    WHEREAS Cholestech is a diagnostics company in the business of developing
and marketing point-of-care diagnostic instruments and reagents; and

    WHEREAS the parties wish to develop a point-of-care diagnostic test for the
measurement of bone resorption utilizing Metra's Pyrilinks-Registered
Trademark--D product and the Cholestech L-D-X-Registered Trademark- instrument
platform and cassette format, and to maximize the distribution and market
penetration of such test;

    NOW, THEREFORE, in consideration of the mutual covenants and conditions set
forth herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto do hereby agree
as follows:

                                      AGREEMENT

SECTION 1:  DEFINITIONS AND RULES OF CONSTRUCTION

1.1 DEFINITIONS.  For purposes of this Agreement, the following words and
phrases shall have the following meaning:

    1.1.1     "AFFILIATE" shall mean, with respect to a party, any person,
corporation or other business entity that directly, or indirectly through one or
more intermediaries, controls or is controlled by, or is under common control
with, a party.  For this purpose, control of a corporation or other business
entity shall mean direct or indirect beneficial ownership of fifty percent (50%)
or more of the voting interest in, or a fifty percent (50%) or greater interest
in the equity of, such corporation or other business entity.

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                                         -1-

<PAGE>

                                                                   CONFIDENTIAL

    1.1.2     "CHOLESTECH TECHNOLOGY" shall mean all of Cholestech's existing
or future non-public and proprietary technology, including Cholestech Joint
Inventions (as defined in Section 9.1), for Cholestech's L-D-X-Registered
Trademark-  point-of-care diagnostic instruments and reagents as necessary to
develop, manufacture, and commercially exploit the Licensed Product and Future
Licensed Products as set forth in this Agreement, said technology being
discovered or developed by or for Cholestech or licensed to Cholestech which
Cholestech in turn is free to license, including all developments, discoveries,
inventions, techniques, methods, processes, trade secrets, biological materials,
know-how and technical information pertaining thereto, whether or not
patentable, and any improvements or modifications thereto made by Cholestech (to
the extent Cholestech shall have the right to grant such rights) during the Term
of this Agreement.

    1.1.3     "COMBINATION PRODUCT" shall mean a Licensed Product or Future
Licensed Products that is sold together in combination with one or more
diagnostic markers outside the scope of this Agreement having significant
independent diagnostic utility.

    1.1.4     "FDA" shall mean the United States Food and Drug Administration
or any successor agency thereof.

    1.1.5     "FULLY BURDENED MANUFACTURING COST" of Reagents, Licensed
Product, or Future Licensed Products shall mean the cost of [             ] 
incurred in the manufacture of such Reagents, Licensed Product, or Future 
Licensed Products, respectively, such calculation being based upon accepted 
industry standards as determined by U.S. GAAP.

    1.1.6     "FUTURE LICENSED PRODUCTS" shall mean immunoassay cassettes that
incorporate Metra Future Products for use with Cholestech's L-D-X-Registered
Trademark-   point-of-care instrument and which incorporate any Metra Technology
and Cholestech Technology.

    1.1.7     "LICENSED PATENTS" shall mean either Cholestech Patents or Metra
Patents:

         1.1.7(a)  "CHOLESTECH PATENTS" shall mean all patents and patent
applications, including provisional applications, as to which Cholestech has, as
of the Effective Date or during the Term of this Agreement, the right to grant
the licenses or sublicenses with respect thereto, containing claims covering the
Licensed Product or Future Licensed Products or processes relating thereto, and
all patents and patent applications resulting from Cholestech Joint Inventions,
and which are filed with respect to inventions conceived prior to or during the
Term of this Agreement in the United States or any foreign jurisdiction,
including any continuation, continuation-in-part, division, substitute
application, re-registration, or patent issued therefrom, any reissue, extension
or patent term extension thereof, and any confirmation patent or registration
patent or patent of addition based on any such patent.

         1.1.7(b)  "METRA PATENTS" shall mean all patents and patent
applications, including provisional applications, as to which Metra has, as of
the Effective Date or during the Term of this Agreement, the right to grant the
licenses or sublicenses with respect thereto, containing claims covering the
Licensed Product or Future Licensed Products or processes

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                                         -2-

<PAGE>

                                                                   CONFIDENTIAL

relating thereto, and all patents and patent applications resulting from Metra
Joint Inventions, and which are filed with respect to inventions conceived prior
to or during the Term of this Agreement in the United States or any foreign
jurisdiction, including any continuation, continuation-in-part, division,
substitute application, re-registration, or patent issued therefrom, any
reissue, extension or patent term extension thereof, and any confirmation patent
or registration patent or patent of addition based on any such patent.

    1.1.8     "LICENSED PRODUCT" shall mean an immunoassay cassette for the
measurement of bone resorption, such cassette incorporating Metra's
Pyrilinks-Registered Trademark--D technology for measurement of
deoxypyridinoline in human urine samples, for use with Cholestech's
L-D-X-Registered Trademark- point-of-care instrument, as described in further
detail in the product specifications set forth in EXHIBIT A attached hereto, and
which incorporates any Metra Technology and Cholestech Technology.

    1.1.9     "LICENSED PRODUCT PROFITS" shall mean any Net Sales of Licensed
Product or Future Licensed Products, as applicable, minus Cholestech's Fully
Burdened Manufacturing Cost for such Licensed Product or Future Licensed
Products, as applicable, and minus Cholestech's and Metra's [                ] 
costs directly associated with the commercialization of such Licensed Product 
and Future Licensed Products, as applicable, solely to the extent that such 
deductions are expressly approved by the Commercialization Committee set forth 
in Section 3.2 hereto.

    1.1.10    "METRA FUTURE PRODUCT(S)" shall mean, subject to Section 4.5,
Metra's existing and future connective tissue biochemical markers and Reagents,
exclusive of biochemical markers and Reagents incorporated in Licensed Product,
and that Metra decides to commercialize or have commercialized (to the extent
Metra shall have the right to grant such rights; PROVIDED, HOWEVER, that in the
event that Metra discovers any new biochemical marker ("METRA NEW MARKER") or
obtains a license to a biochemical marker from a third party [              ]
("THIRD PARTY MARKER"), then Metra can [                         ] such Metra 
New Marker or Third Pary Marker to any third party [                ] with a 
third party for such Metra New Marker or Third Pary Marker that [             ]
to such Metra New Marker or Third Pary Marker).

    1.1.11    "METRA TECHNOLOGY" shall mean, subject to Section 4.5, all of
Metra's existing or future non-public and proprietary technology, including
Metra Joint Inventions, for the measurement of biochemical markers, and other
connective tissue biochemical markers, said technology being discovered or
developed by or for Metra or licensed to Metra which Metra in turn is free to
license (to the extent Metra shall have the right to grant such rights),
including all developments, discoveries, inventions, techniques, methods,
processes, trade secrets, biological materials, know-how and technical
information pertaining thereto, whether or not patentable, and any improvements
or modifications thereto made by Metra (to the extent Metra shall have the right
to grant such rights) during the term of this Agreement.

    1.1.12    "TRADEMARKS" shall mean those trademarks, registered or not, now
owned or licensed, or hereafter acquired or licensed during the term of this
Agreement, by or on behalf of either party or any of such party's Affiliates,
adopted or used in connection with this Agreement,

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL
                                         -3-

<PAGE>

                                                                   CONFIDENTIAL

including those Trademarks listed in EXHIBIT F attached hereto, which list may
be updated from time to time by the parties hereto.

    1.1.13    "NET SALES" shall mean the gross invoiced price for all Licensed
Product or Future Licensed Products sold by Cholestech or its Affiliates, or by
Metra or its Affiliates pursuant to Section 4.4, to unrelated third parties (or
to Affiliates that are end-users of the Licensed Product or Future Licensed
Products), less deductions made in the normal course of business for:  (i)
commercially reasonable quantity, trade and cash discounts or rebates, recalls,
credits or allowances and adjustments separately and actually credited to
customers; (ii) charges for freight, postage, transportation, import or export
taxes, excise taxes and other similar taxes, insurance and other delivery costs
not otherwise charged to the customer; and (iii) any tax or other government
charges imposed on the sale or use of Licensed Product or Future Licensed
Products (other than income tax) levied on its sale, transportation or delivery
and borne by Cholestech or its Affiliates or by Metra or its Affiliates, as
applicable and any withholding taxes to the extent that the selling party bears
the withholding tax and cannot claim a credit for such amount; PROVIDED,
HOWEVER, that:  (w) the Commercialization Committee, described in Section 3.2
hereto, shall determine the basis for determining Net Sales price with respect
to Combination Products; (x) Net Sales shall not include Licensed Product or
Future Licensed Products used in [               ], or for [                 ] 
or [                 ] or as [                        ] so long as Cholestech 
receives no compensation in any form for such use/donation; and (y) in the 
event that a Licensed Product or any Future Licensed Products is transferred by
Cholestech or its Affiliates or by Metra or its Affiliates, as applicable, to 
an end user, except as provided in Section 1.1.13(x) hereto, free of charge or 
at a price which is substantially lower than the price that would be charged 
in an arms length third party transaction, then the Net Sales of such Licensed 
Product or Future Licensed Products shall be determined using the average 
selling price of such Licensed Product or Future Licensed Products, as 
applicable, by Cholestech or its Affiliates or by Metra or its Affiliates, as 
applicable, in arms length third party transactions over the same time period 
in which it is given or, if no average selling price of such Licensed Product 
is available as of such date, at a reasonable value (to be agreed upon by the 
Commercialization Committee) based upon the average selling prices of products
available in the marketplace similar to such Licensed Product or Future 
Licensed Products, as applicable.

    1.1.14    "NON-METRA PRODUCT" shall mean an immunoassay cassette that does
not incorporate any Metra Technology or Reagents and that incorporates an
immunoassay cassette developed and funded under this Agreement or that is
manufactured using the same or a substantially similar main body tool and
reaction bar tool as those tools developed under this Agreement for
manufacturing the Licensed Product.

    1.1.15    "REAGENTS" shall mean chemical and biological materials which use
Metra Technology, and include polyclonal or monoclonal antibodies, antigens, and
conjugates.

    1.1.16    "REGULATORY APPROVAL" shall mean the granting of all governmental
or regulatory approvals required, if any, for the sale of a Licensed Product in
a given country or jurisdiction within the Territory, including without
limitation, FDA approval in the United States.

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL
                                         -4-

<PAGE>

                                                                   CONFIDENTIAL

    1.1.17    "TECHNICAL INFORMATION" shall mean all inventions, discoveries,
know-how, trade secrets, information, experience, technical data, formulas,
procedures or results relating to the Licensed Product or Future Licensed
Products (including, without limitation, physical, chemical, biological, pre-
clinical and clinical data, product forms and formulations, and know-how
relating to methods, processes or techniques for the manufacture or use of
Licensed Product or Future Licensed Product including, without limitation,
preparation, recovery, packaging, and sterilization processes and techniques,
control assays and specifications), which are rightfully held by a party hereto
or its Affiliates with right to license or sublicense on the Effective Date, or
which are developed or acquired by such party or its Affiliates with right to
license or sublicense during the term of this Agreement, and which Technical
Information is useful or necessary for the registration, manufacture, use or
sale of Licensed Product or Future Licensed Products.

    1.1.18    "TERRITORY" shall mean the entire world.

1.2 RULES OF CONSTRUCTION.  As used in this Agreement, all terms used in the
singular shall be deemed to include the plural, and vice versa, as the context
may require.  The words "hereof," "herein" and "hereunder" and other words of
similar import refer to this Agreement as a whole, including any exhibits
hereto, as the same may from time to time be amended or supplemented.  The word
"including" when used herein is not intended to be exclusive and means
"including, without limitation."  The descriptive headings of this Agreement are
inserted for convenience of reference only and do not constitute a part of and
shall not be utilized in interpreting this Agreement.  The terms "party" and
"parties" shall refer to Metra and Cholestech, individually or collectively.
This Agreement has been negotiated by the parties hereto and their respective
counsel and shall be fairly interpreted in accordance with its terms and without
any rules of construction relating to which party drafted the Agreement being
applied in favor of or against either party.

SECTION 2:  LICENSE GRANT.

2.1 LICENSE FROM METRA TO CHOLESTECH.  Metra hereby grants to Cholestech and
its Affiliates:  (i) a non-exclusive, royalty-bearing license or sublicense, as
the case may be, without the right to sublicense, under Metra Patents and Metra
Technology to use, make, have made, sell, offer to sell, import or otherwise
distribute Licensed Product within the Territory; and (ii) subject to Section
4.5, a non-exclusive, royalty-bearing license or sublicense, as the case may be,
without the right to sublicense, under Metra Patents and Metra Technology to
use, make, have made, sell, offer to sell, import, or otherwise distribute the
Future Licensed Products; PROVIDED, HOWEVER, that any and all licenses granted
hereunder are subject to the provisions of Section 4, and subject specifically,
without limitation, to Section 4.6.

2.2 SUPPLY AGREEMENT; DEFAULT MANUFACTURING LICENSES.  The parties agree that
following execution of this Agreement, but in any event, within three (3) months
hereof, they will negotiate in good faith and will execute a supply agreement
which includes terms of supply of Metra's Reagents and terms of supply of the
Licensed Product and Future Licensed Products under Section 4.4, and which shall
incorporate all of the obligations set forth under Section 8 hereto.

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                                         -5-

<PAGE>

                                                                   CONFIDENTIAL

Such supply agreement shall provide that Reagents, Licensed Product, and Future
Licensed Products shall be supplied by one party to the other party at [     ],
which shall be payable within [        ] days of date of invoice for such 
Reagents, Licensed Product, and Future Licensed Products.  Any royalties 
therefor or [      ] of Licensed Products Profits shall be made according to 
the terms of this Agreement.

    2.2.1     Metra agrees that Cholestech shall be granted a non-exclusive,
royalty-free license (for the Term of this Agreement) to make, have made,
import, use, offer to sell, sell and otherwise distribute the Reagents if:  (i)
Metra is in breach under this Agreement of its payment obligations to Cholestech
(unless such payment obligations are subject of a good faith dispute between the
parties) and fails to cure any such breach within a specified cure period; (ii)
Metra has breached its obligation to [                                     ] 
and fails to cure any such breach within a specified cure period; or
(iii) enters into bankruptcy or liquidation proceedings or becomes insolvent,
all pursuant to the definitive terms of the supply agreement.

    2.2.2     Cholestech agrees that Metra shall be granted a non-exclusive
royalty-free license (for the Term of this Agreement) to make, have made,
import, use, offer to sell, sell and otherwise distribute [             ], if 
Cholestech:  (i) has breached its payment obligations to Metra under this 
Agreement (unless such payment obligations are subject of a good faith dispute 
between the parties) and fails to cure any such breach within a specified cure 
period; (ii) has breached its obligation to supply Licensed Product or Future 
Licensed Products to Metra or its Affiliates pursuant to Section 4.4 or to the 
agreed upon distributors pursuant to the agreed upon forecasts, and fails to 
cure any such breach within a specified cure period; or (iii) enters into 
bankruptcy or liquidation proceedings or becomes insolvent, all pursuant to 
the definitive terms of the supply agreement. Cholestech further agrees that 
Metra shall be granted a non-exclusive license (for the Term of this 
Agreement), [              ] to make, have made, import, use, offer to sell, 
sell and otherwise distribute Cholestech's [                          ], if 
Cholestech: (x) has breached its obligation to supply Cholestech's 
L-D-X-Registered Trademark- point of care instrument to Metra or its Affiliates
pursuant to Section 4.4 or to the agreed upon distributors pursuant to the 
agreed upon forecasts, and fails to cure any such breach within a specified 
cure period; or (y) enters into bankruptcy or liquidation proceedings or 
becomes insolvent or ceases manufacturing activities, all pursuant to the 
definitive terms of the supply agreement.  In addition, the supply agreement 
shall contain a provision for a pro rata allocation of Licensed Product, Future
Licensed Products, Reagents, and Cholestech's L-D-X-Registered Trademark- 
point-of-care instrument from Cholestech to Metra in the event that demand for 
such products exceeds currently available supply, as determined by firm 
purchase orders, and shall provide that Cholestech may cure any such shortage 
within a reasonable cure period by second sourcing or increased internal 
manufacturing capacity.

2.3 TRADEMARK LICENSE.  Each party hereby grants to the other party hereto a
non-exclusive license under its Trademarks to use such Trademarks solely for
purposes of co-branding the Licensed Product or Future Licensed Products.  Each
party shall communicate to the other party its desired appearance and usage of
its Trademarks.  Each party shall have the right to review, approve, and request
reasonable modifications of any and all use of its Trademarks by the other

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL
                                         -6-

<PAGE>

                                                                   CONFIDENTIAL

party prior to such use, which modifications the other party shall use its best
efforts to promptly incorporate or adopt with respect to such Trademarks.  Each
party will promptly respond to requests from the other party for review of such
use.

SECTION 3:  LICENSED PRODUCT DEVELOPMENT.

3.1 DEVELOPMENT COMMITTEE.  Metra and Cholestech shall form a Development
Committee which shall meet monthly or as mutually agreed to discuss progress
toward and any deviations from the development and milestone schedule set forth
in EXHIBIT B and to discuss and agree upon deviations from the product
specifications set forth in EXHIBIT A and resulting deviations from the
milestone schedule set forth in EXHIBIT B.  The Development Committee will be
composed of two (2) voting representatives from each of Metra and Cholestech.
All decisions of the Development Committee will require a majority vote of such
committee.  A quorum shall not exist for the purpose of a vote of the
Development Committee unless all members thereof are in attendance.  In the
event of an even split or an inability of the Development Committee to reach a
decision on any issue, then such issue shall be submitted to the CEOs of both
parties.  In the event that the CEOs are unable to reach a decision on such
issue, then the matter shall go to arbitration pursuant to Section 14.6 hereto.
Any decision by the Development Committee shall be binding upon the parties.

3.2 COMMERCIALIZATION COMMITTEE. Metra and Cholestech shall form a
Commercialization Committee which shall meet monthly or as mutually agreed to
determine distribution and promotional parties for the Licensed Product and
Future Licensed Products and to determine forecasting pursuant to Sections 4.4,
8.2 and 8.3, and joint marketing and collaboration activities, and financial
terms for Future Licensed Products.  The Commercialization Committee will be
composed of two (2) voting representatives from each of Metra and Cholestech.
All decisions of the Commercialization Committee will require a majority vote of
such committee.  A quorum shall not exist for the purpose of a vote of the
Commercialization Committee unless all members thereof are in attendance.  In
the event of an even split or an inability of the Commercialization Committee to
reach a decision on any issue, then such issue shall be submitted to the CEOs of
both parties.  In the event that the CEOs are unable to reach a decision on such
issue, then the matter shall go to arbitration pursuant to Section 14.6 hereto;
PROVIDED, HOWEVER, that in the event that the CEO's cannot decide on a
distribution party for a Licensed Product or Future Licensed Products pursuant
to Section 4.1 hereto, then each party shall have the right to co-distribute
such Licensed Product and such Future Licensed Products pursuant to Section 4.4
hereto.  Any decision by the Commercialization Committee shall be binding upon
the parties. Commercialization Committee shall review marketing and promotional
literature including labeling for any Licensed Product and Future Licensed
Products for compliance with the rules and regulations promulgated by a
regulatory authority of competent jurisdiction, including FDA and the Securities
Exchange Commission.

3.3 COSTS.  Each party shall pay its own travel and lodging expenses incurred
in connection with the meetings of both the Development Committee described in
Section 3.1 and the Commercialization Committee described in Section 3.2, which
meetings shall alternate between locations so as to balance travel requirements
and expenses. Each party shall use reasonable

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL
                                         -7-

<PAGE>

                                                                   CONFIDENTIAL

efforts to cause its respective representatives to attend all meetings of both
the Development Committee and the Commercialization Committee.

3.4 EXCHANGE OF TECHNICAL INFORMATION.  During the Term of this Agreement,
Metra and Cholestech shall inform each other, to the extent they have not
already done so, of their respective Technical Information which is necessary or
useful for the other party to carry out its obligations under this Agreement to
develop, manufacture, register, market and sell Licensed Product and Future
Licensed Products.  During the term of this Agreement, each party will permit
access at reasonable times and with reasonable frequency to the relevant
scientific, manufacturing, preclinical, clinical, regulatory and other
appropriate personnel of the other party and its Affiliates.  Each party shall
inform the other through the Development Committee or Commercialization
Committee, as appropriate, on a timely basis of their respective Technical
Information (including all preclinical and clinical results relating to the
Licensed Product or Future Licensed Products) obtained by them to the extent
such results are necessary or useful for the other party to carry out its
obligations under this Agreement to develop, manufacture, register, market and
sell Licensed Product or Future Licensed Products.

3.5 COORDINATION OF CLINICAL TRIALS AND SUBMISSIONS.  Cholestech shall assume
primary responsibility for the clinical development program for the Licensed
Product and Future Licensed Products, including all clinical trials and
submissions as may be required to obtain any Regulatory Approval or waive status
under the Clinical Laboratory Improvement Amendments of 1988 (CLIA).  Cholestech
shall prepare an annual clinical trial plan for the Licensed Product and Future
Licensed Products, taking into consideration the suggestions of the person or
persons appointed by Metra to supervise the clinical development of such
Licensed Product and Future Licensed Products, and subject to the approval of
the Development Committee and Commercialization Committee.  Cholestech shall pay
any and all costs and expenses associated with such clinical trials, FDA, and
CLIA submissions, and shall allow Metra to review and provide input into such
trials and submissions, in connection with the Licensed Products and Future
Licensed Products.  Cholestech shall be responsible for and shall pay any and
all costs and expenses associated with all FDA Good Manufacturing Practice
("GMP") obligations in connection with the Licensed Products and Future Licensed
Products, PROVIDED, HOWEVER, that Metra has responsibility for any GMP
obligations in connection with the Reagents.  Metra shall provide to Cholestech
access to its 510(k) and/or PMA submissions, [                ] and any [      ]
(the "SUBMISSIONS MATERIALS") to the extent necessary to facilitate Cholestech's
FDA or other applicable regulatory body submission for the Licensed Product and 
Future Licensed Products.

3.6 REAGENTS.  During the Term of this Agreement, Metra shall supply Reagents
to Cholestech at a price equal to Metra's [                                    ]
subject to the provisions of Section 13.3 hereto.

3.7 PERMITTED USE OF INFORMATION AND ASSISTANCE.  Cholestech and Metra each
shall be entitled to use the information and assistance furnished by the other
party pursuant to this Section 3 solely for purposes of: (i) achieving Licensed
Product and Future Licensed Products quality and/or quantity requirements;
and/or (ii) as necessary to fulfill the obligations set forth in this

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Agreement, without incurring any additional royalty or other payment obligation.
All such information and assistance shall be deemed Confidential Information as
defined in Section 12.1 hereto.

3.8 COVENANTS.  Cholestech shall use its commercially reasonable efforts,
consistent with its reasonable business judgment and consistent with those
applied to other products of similar commercial value, to develop Licensed
Product and Future Licensed Products and to commence commercial marketing of
Licensed Product and Future Licensed Products within the Territory in countries
in which Cholestech normally markets diagnostic products after obtaining
necessary government approvals in such countries.

SECTION 4:  DISTRIBUTION

4.1 INTERNATIONAL DISTRIBUTION.  Subject to the provisions of Section 4.6
below, outside of the United States, Cholestech and Metra agree that both
parties will use reasonable commercial efforts to jointly agree upon
distribution and promotional party(ies) for the Licensed Product and Future
Licensed Products.

4.2 UNITED STATES DISTRIBUTION.  In the United States, Cholestech shall be free
to appoint any nonexclusive distribution and promotional party for the Licensed
Product and Future Licensed Products. In the event Metra desires to appoint an
additional nonexclusive distribution party for the Licensed Product and Future
Licensed Products in addition to the party(ies) appointed by Cholestech, Metra
may so appoint the additional [                          ] distribution party
without Cholestech's prior written consent: [                                ]
In the event Cholestech desires to appoint an exclusive or semi-exclusive 
distribution and/or promotional party for the Licensed Products and Future 
Licensed Products with respect to any geographic region or class of customers 
within an identified market segment, Cholestech shall submit the proposed 
exclusive distribution party to the Commercialization Committee for approval. 
For purposes of this Agreement, the term "SEMI-EXCLUSIVE" shall mean only two.

4.3 LICENSED PRODUCTS PROFITS.  Except in the circumstance contemplated under
Section 4.4 hereto, the parties will [                      ] Licensed Product
Profits for Licensed Product and [                                 ] received 
from distribution parties and promotional parties for the Licensed Product; 
PROVIDED, HOWEVER, in the event that any and all outstanding balances due on 
loans granted from Metra to Cholestech under Section 6 hereto have not been 
fully repaid to Metra, then: (i) any and all [                  ] received by 
Cholestech from distribution or promotional parties for such Licensed Product 
shall be paid to Metra and first be applied to any outstanding interest and 
thereafter to any outstanding principal of such outstanding loan balance; and, 
(ii) Licensed Product Profits shall be paid in accordance with

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Section 6.3(b).  The Commercialization Committee shall agree to the distribution
of Licensed Product Profits for Future Licensed Products.

4.4 [                 ].  In the event that both the Commercialization Committee
and the CEO's cannot agree upon a distribution party in accordance with the
provisions of Section 3.2 hereto for any [                 ] outside of the
[              ], and to assure that the Licensed Product and Future Licensed
Products are distributed to a broad market in an efficient manner, then [      ]
parties will have [                     ] for the Licensed Product and Future
Licensed Products in such [                 ], subject to the royalty terms and
conditions set forth in Sections 5.1 and 5.2 hereto.  It is not the intention of
the parties to have [              ], but solely in the event that the parties,
using their good faith efforts cannot reach agreement on [                   ]
of Licensed Products or Future Licensed Products.

4.5 FUTURE LICENSED PRODUCTS.  Solely in the event that:  (i) the Licensed
Product, as set forth in EXHIBIT A hereto, has received [             ]; 
and (ii) the parties, by the Commercialization Committee and acting reasonably 
and in good faith, agree on the [                            ] for the Licensed 
Product in each of the [                               ] Cholestech will have a 
non-exclusive right to Metra Future Products to make, have made, import, use,
and sell Future Licensed Products, as set forth in Section 2.1.  Cholestech will
bear all costs and expenses associated with formatting Metra Future Product to
run on Cholestech's L-D-X-Registered Trademark- point-of-care instrument;
PROVIDED, HOWEVER, that Cholestech is not prohibited from obtaining third party
financing so long as Metra's Confidential Information is not disclosed to any
such third party without Metra's prior written approval.  Prior to any sale of a
Future Licensed Products by Cholestech, the Commercialization Committee shall
determine and set any profit split or royalty payments on the sale of such
Future Licensed Products; PROVIDED, HOWEVER, that any such profit or royalty
payments shall not exceed the amounts paid by the parties under Sections 4.3 and
5.1.  In addition, in the event that Metra is obligated to pay royalties,
license, milestone, or other fees to any third party with respect to Metra
Future Product, then the Commercialization Committee shall determine and set the
allocation of such royalties, license, milestone or other such fees.

4.6 [      ].  In the event that either party distributes any Licensed Product 
or Future Licensed Products in the territory of [     ], the parties hereto
acknowledge and agree that Metra has the sole right to select and appoint the
distributor and promotional party for such Licensed Product and Future Licensed
Products.

4.7 NON-COMPETE OBLIGATIONS. Subject to the limitations of this Section 4.7,
Cholestech shall not market or distribute any biochemical marker that is
competitive with the Licensed Product or any Metra Future Product; PROVIDED,
HOWEVER, that the foregoing obligation shall terminate upon the earlier to occur
of:  (i) Metra enters into a development, supply and/or license agreement with a
third party [                                                             ]; or
(ii) in the case of a third party to whom Metra has granted rights to more than
one product platform, including point-of-care, when such party [             ].
For purposes

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of this Section 4.7, two markers are deemed to be competitive only if they
compete for the same intended use.  As an example, a marker to measure bone
resorption does not compete with a marker to measure bone formation, even though
the two markers both measure an aspect of bone metabolism.  If Cholestech
desires to market or distribute its own marker or a third party marker that does
not compete with an existing Metra Future Product, then Cholestech shall first
consult with Metra for a period of twenty-one (21) days regarding whether Metra
has a competing marker in development which will be available to Cholestech
under the terms of this Agreement.  If Metra does not have such a competing
marker in development, [                                                ] then
Cholestech shall be free to market and its own or third party marker.   In
addition, the obligations of this Section 4.7 shall not apply to any Metra
Future Products that are not covered by a patent that is either owned by or
licensed to Metra.  Metra shall keep Cholestech informed at all times regarding
its existing and future Metra Future Products.  The obligations of this Section
4.7 shall terminate in the event that Cholestech loses the right to obtain Metra
Future Products because the parties fail to agree on a [                      ]
for one of the [                ] named in Section 4.5.

SECTION 5:  ROYALTY PAYMENTS; REPORTS.

5.1 ROYALTY ON DISTRIBUTION OF LICENSED PRODUCT. In the event that the
Commercialization Committee cannot agree in accordance with the provisions of
Section 3.2 hereto regarding a distribution and promotion party for Licensed
Products in any country outside the United States then, as contemplated under
Section 4.4 hereto, each party hereto shall have the right to appoint its own
distribution and promotion party(ies) in such country, subject to payment of the
following royalties:

    (i)  In the event that Licensed Product are distributed by Metra, Metra
will pay to Cholestech a royalty in the amount of [                  ] on the
[                                                                  ]; and

    (ii) In the event that Licensed Product are distributed by Cholestech,
Cholestech will pay to Metra a royalty in the amount of [              ] 
on the [                                                         ].

5.2 CHOLESTECH DISTRIBUTED NON-METRA PRODUCT.  In the event that a Non-Metra
Product is distributed by Cholestech, and in the event that Cholestech does not
exercise either Loan (as defined in Section 6.3 hereto) at Milestone 4 or 5 of
the development of Licensed Product, as set forth in EXHIBIT D, then Cholestech
will pay to Metra a royalty in the amount of [                            ] on 
Net Sales of Non-Metra Product until the Licensed Product is released
commercially, at which time Cholestech will pay to Metra such royalty in the
amount of [             ] on Net Sales of Non-Metra Product; PROVIDED, HOWEVER,
that in the event that there is a delay in the commercial release of Licensed
Product [                                            ]

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[                                                       ] as set forth in this 
Section 5.2.  In the event that a Non-Metra Product is distributed by 
Cholestech, and in the event that Cholestech does exercise either Loan 
(as defined in Section 6.3 hereto) at Milestone 4 or 5 of the development 
of Licensed Product, as set forth in EXHIBIT D, then the royalty payments 
shall be paid by Cholestech to Metra in accordance with Sections 6.3(e), 
(f), (g), or (h), as applicable.  In any event, Cholestech's obligation to 
pay a royalty to Metra on the sale and distribution of a Non-Metra Product
shall expire [           ] from the date of [          ] of such Non-Metra 
Product.

5.3 ROYALTY PAYMENTS.  Royalties shall be calculated on a quarterly basis and
shall be paid no later than forty-five (45) days after the end of each calendar
quarter.

5.4 REPORTS.  Each of Cholestech and Metra shall furnish to the other party a
written report which includes:  (i) the Licensed Product and Future Licensed
Products sold; (ii) the identity of the countries in which sales have been made;
(iii) the Net Sales of each Licensed Product and Future Licensed Products; and
(iv) the financial information relevant to the calculation of royalties,
including the prevailing royalty rate(s) used to calculate such royalties.  Such
reports shall be due no later than forty-five (45) days after the end of each
quarter, together with any royalties then due.  Such reports shall be made
whether or not either party has engaged in any sales hereunder during said
quarter and shall commence upon commercial release of the first product
hereunder.  All information provided by the parties under this Section 5.4 shall
be Confidential Information; PROVIDED, HOWEVER, that Metra may disclose such
information to the Rowett Research Institute to the extent required by the terms
of Metra's License Agreement with the Rowett Research Institute dated April 30,
1990, PROVIDED, FURTHER, that Rowett agrees in writing to keep such information
disclosed to it confidential and not to use such information in any way to the
detriment of Cholestech.

5.5 RECORDS AND AUDIT.  Cholestech shall keep full, complete and proper records
and accounts of Net Sales and Fully Burdened Manufacturing Costs of each
Licensed Product and Future Licensed Products in sufficient detail to enable the
royalties and Licensed Products Profits payable to Metra to be determined, and
Metra shall keep full, complete and proper records and accounts of Net Sales and
Fully Burdened Manufacturing Costs of each Reagents and, as applicable, Licensed
Product and Future Licensed Products.  Upon reasonable notice to the audited
party, each party shall have the right to have an independent certified public
accountant, selected by the auditing party and acceptable to the audited party,
audit the audited party's and such audited party's Affiliates' records
pertaining to Licensed Product, Future Licensed Products, and Reagents, as
applicable, during normal business hours to verify the royalties payable, Net
Sales, and Fully Burdened Manufacturing Costs of each Licensed Product and
Future Licensed Products pursuant to this Agreement; PROVIDED, HOWEVER, that
such audit:  (i) shall not take place more frequently than once a year; and (ii)
shall not cover such records for more than the preceding three (3) years.  Such
audit shall be at the expense of the auditing party unless the audited party has
paid to the auditing party less than ninety-five percent (95%) of the amount
determined to be due for a given time period, in which case such audit shall be
at audited party's expense. Each party hereto shall (and require its Affiliates
to) preserve and maintain all such records and accounts required for audit for a
period of three (3) years after the quarter to which

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such records and accounts apply.  In any event, the auditor shall only disclose
to the auditing party the results of such audit and none of the data upon which
such audit results are based, which audit results shall be treated by the
auditor and the auditing party as Confidential Information subject to the
provisions of this Agreement.

SECTION 6:  EQUITY INVESTMENT; LOANS.

6.1 EQUITY INVESTMENT FUNDING.  Metra will fund Cholestech's development of the
Licensed Product by investing in common stock of Cholestech in accordance with
the Investment Schedule set forth in EXHIBIT D attached hereto.  Equity
investments will be made by Metra upon the completion of each Milestone, as set
forth in EXHIBIT D, upon the mutual agreement of both parties that such
Milestone has successfully been completed, acting reasonably and in good faith.
The Milestones set forth in EXHIBIT D do not necessarily need to be performed in
the recited order; PROVIDED, HOWEVER, that the first Milestone must be performed
before any other Milestone.  In addition, Cholestech hereby grants to Metra
registration rights as set forth in EXHIBIT E hereto, and the parties shall
execute a Registration Rights Agreement substantially in the form of
Registration Rights Agreement attached hereto as EXHIBIT E.

6.2 NO OBLIGATION.  Cholestech is under no obligation to accept any loan amount
associated with either of Milestone 4 or Milestone 5, as set forth in EXHIBIT D.

6.3 LOAN CONDITIONS:  LICENSED PRODUCTS.  In the event that Cholestech
exercises its option to the loan at either of Milestone 4 or Milestone 5 (the
"LOAN"), as set forth in EXHIBIT D attached hereto, each such Loan will be
subject to the following provisions:

    (a)  The annual interest rate for each such Loan shall be at the [        ] 
at the time of each such Loan, as published in the Wall Street Journal on the 
date of each such loan;

    (b)  The Licensed Product Profits for Licensed Product will be divided
between Metra and Cholestech according to the following:  [              ] of
such Licensed Product Profits shall be paid to Cholestech, and [           ] 
of such Licensed Product Profits shall be paid to Metra, [              ] of 
such [          ] to be credited toward any outstanding Loan amount owed
by Cholestech.(1)  Upon payment in full of all Loan balances, the parties shall
[              ] Licensed Product Profits, as set forth in Section 4.3 hereto;

    (c)  Any and all outstanding Loan balance will be due and payable in full
the sooner of:  (i) [              ] from the date the Licensed Product is first
made [                     ]; or (ii) upon termination of this Agreement by 
Metra for breach by Cholestech, according to the Schedule set forth in 
Section 6.3(d);


- -----------------------
(1)By way of example, but not limitation, if profits from the sale of Licensed
Product equals [   ], then [   ] is paid to Cholestech, and [   ] is paid to 
Metra, and out of Metra's [   ], Metra will credit [  ] toward any outstanding 
loan balance.

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    (d)  If the Development Committee determines or the parties mutually agree
that the Licensed Product cannot be released commercially that would meet the
then-existing product specifications, then all Loan amounts will be repaid to
Metra by Cholestech in [               ] installments over the period of [    ]
extending from the date of such determination;

    (e)  For so long as there is any outstanding Loan balance, whether or not
the Licensed Product has been commercially released (except as set forth in
Section 6.3(f) hereto), Cholestech will pay to Metra a royalty in the amount of
[            ] on Net Sales of Non-Metra Product;

    (f)  For so long as there is any outstanding Loan balance, and in the event
that there is a delay in the commercial release of Licensed Product [         ]
then Cholestech will pay to Metra a royalty in the amount of [               ]
on Net Sales of Non-Metra Product until such time as:  (i) [                  ]
and the Licensed Product is [                      ], at which time Cholestech 
shall pay to Metra such royalty as set forth in Section 6.3(e) hereto; or (i) 
such Loan has fully been repaid by Cholestech, at which time Cholestech shall 
pay to Metra such royalty as set forth in Section 6.3(g) hereto;

    (g)  In the event that Cholestech repaid all outstanding Loan balances to
Metra, and whether or not the Licensed Product has commercially been released
(except as set forth in Section 6.3(h) hereto), then Cholestech will pay to
Metra a royalty in the amount of [            ] on Net Sales of such Non-Metra
Product;

    (h)  In the event that Cholestech repaid all outstanding Loan balances to
Metra, and in the event that there is a delay in the commercial release of
Licensed Product [                                ] then Cholestech will pay 
to Metra a royalty in the amount of [                           ] on Net Sales 
of Non-Metra Product [                        ] and the Licensed Product is 
[                 ] at which time Cholestech shall pay to Metra the royalty as 
set forth in Section 6.3(g); and

    (i)  At any time during the Term of this Agreement, Cholestech shall have
the right to repay the entire outstanding loan balance without penalty.

SECTION 7:  GOVERNMENT APPROVALS

7.1 NOTICE OF FDA APPROVALS.  Metra shall promptly provide Cholestech with
notice of FDA  and corresponding foreign regulatory approvals received by Metra
regarding Licensed Product and Future Licensed Products.

7.2 APPROVALS.  Cholestech shall solely be responsible for obtaining all
necessary governmental approvals, including FDA approvals, for the development,
testing, production, distribution, sale and use of Licensed Product, Future
Licensed Products, and Non-Metra Product.  Metra agrees to provide Cholestech,
at Cholestech's expense, (except for the value of any time expended by existing
Metra employees) with any assistance reasonably requested by

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Cholestech, in obtaining such governmental approvals, including, without
limitation, the furnishing of all relevant technical information and know-how
presently or hereafter available to Metra, but excluding any documentation or
data which Metra is bound by obligations to third parties to keep confidential.

7.3 ASSISTANCE WITH REGULATORY APPROVALS.  Metra shall provide Cholestech with
any reasonable assistance that any governmental regulatory body, such as the FDA
or the equivalent, deems necessary or appropriate for Cholestech to secure
regulatory approvals and/or make regulatory submissions in any country with
respect to disclosures made regarding Reagents, including but not limited to FDA
approvals and submissions.

SECTION 8:  MANUFACTURING

8.1 MANUFACTURING/GMP DOCUMENTATION.  To assure the performance of each party's
obligations under the default manufacturing provisions to be included in the
supply agreement (as contemplated by Section 2.2), Cholestech shall keep its
Cholestech Technology (including, but not limited to all relevant
manufacturing/GMP documentation) and Metra shall keep its Metra Technology
(including, but not limited to all relevant manufacturing/GMP documentation),
on-site at the respective company's headquarters and at a location and/or with a
person identified to the other party hereto from time to time.

8.2 CHOLESTECH OBLIGATIONS.  In addition to the responsibilities and
obligations otherwise set forth in this Agreement, Cholestech shall:  (i)
provide any and all necessary funding to scale-up and validate a manufacturing
line capable of producing at least [                           ] of Licensed
Product [         ] suitable for commercial sale; (ii) supply to Metra Licensed
Product in such amounts as Metra may require; PROVIDED, HOWEVER, that Metra or
the Commercialization Committee provides Cholestech with a [                 ]
rolling forecast prepared in good faith setting forth such Licensed Products and
Future Licensed Products requirements on a [       ] basis for [        ], which
forecasts shall be updated; PROVIDED, HOWEVER, that any increase in such
forecast within a [          ] window of receipt by Cholestech cannot be made
without Cholestech's prior written consent; and (iii) identify the Reagents
included in such Licensed Product and Future Licensed Products (including all
packaging, marketing, and promotional materials therefor) by the appropriate
Trademarks, as shall be reasonably directed by Metra.  A material failure to
perform the obligations set forth in this Section 8.2 shall constitute a
material breach of this Agreement.

8.3 METRA OBLIGATIONS.  In addition to the responsibilities and obligations
otherwise set forth in this Agreement, Metra agrees to supply to Cholestech
Reagents that Cholestech requires solely for purposes of exercising its rights
to develop, manufacture and distribute the Licensed Product and Future Licensed
Products pursuant to the terms of this Agreement; PROVIDED, HOWEVER, that the
Commercialization Committee or Cholestech provides Metra with a [         ] 
rolling forecast prepared in good faith setting forth such Reagents requirements
on a [       ] basis for such [         ], which forecasts shall be updated;
PROVIDED, HOWEVER, that any increase in such forecast within a [             ]
window of receipt by Metra cannot be made without Metra's

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prior written consent.  A material failure to perform the obligations set forth
in this Section 8.3 shall constitute a material breach of this Agreement.

SECTION 9:  OWNERSHIP

9.1 JOINT INVENTIONS.  The parties agree that all inventions, discoveries, and
improvements, whether or not patentable, jointly made or conceived by employees
or others acting on behalf of both Metra and Cholestech during the Term of this
Agreement and relating to Reagents or Metra Technology, collectively the "METRA
JOINT INVENTIONS", shall be owned by Metra. The parties further agree that all
inventions, discoveries, and improvements, whether or not patentable, jointly
made or conceived by employees or others acting on behalf of both Metra and
Cholestech during the Term of this Agreement and relating to Cholestech's
L-D-X-Registered Trademark- point-of-care instrument, an immunoassay cassette
for use in Cholestech's L-D-X-Registered Trademark- point-of-care instrument, or
Cholestech Technology, collectively the "CHOLESTECH JOINT INVENTIONS", shall be
owned by Cholestech.  Any invention, discovery, and improvement whether or not
patentable, jointly made or conceived by employees or others acting on behalf of
both Metra and Cholestech during the Term of this Agreement and relating neither
to Reagents, Cholestech's L-D-X-Registered Trademark- point-of-care instrument,
an immunoassay cassette for use in Cholestech's L-D-X-Registered Trademark-
point-of-care instrument, Cholestech Technology or Metra Technology,
collectively "JOINT INVENTIONS", shall be jointly owned by both parties hereto
and each party has the right to exploit and sublicense such Joint Inventions
without any duty to account to the other party for profits derived therefrom,
and the Development Committee shall determine which party shall be responsible
for prosecution and maintenance, and costs and expenses related thereto, of any
patent application and patent relating to such Joint Inventions. Each party
hereto shall promptly disclose to the other party hereto the making, conception
or reduction to practice of any such Metra Joint Invention or Cholestech Joint
Invention.  Each party shall apply for any patent(s) covering its own joint
invention, as defined in this Section 9.1, and shall be responsible for any and
all costs associated with prosecuting and maintaining such patents; PROVIDED,
HOWEVER, that if a party fails to prosecute or maintain any such patent (the
"FIRST PARTY") within sixty (60) days of request in writing by the other party
hereto (the "SECOND PARTY"), such Second Party shall have the right to prosecute
and maintain such patent at its own expense and shall be solely entitled to
ownership of the issuing or issued patent, and such First Party shall have,
during the Term of this Agreement, a non-exclusive, royalty-free license to
make, have made, use, sell, and import under such patent, and after the
termination or exipration of this Agreement, such First Party shall then have a
non-exclusive license to make, have made, use, sell, and import under such
patent, under commercially reasonable royalty terms.

9.2 INVENTIONS.  In the event that Cholestech solely invents or discovers any
improvement(s) or modification(s) solely applicable to:  (i) Metra Technology,
then ownership therein shall be solely in Metra; or (ii) Cholestech Technology,
then ownership therein shall be solely in Cholestech.  In the event that Metra
solely invents or discovers any improvement(s) or modification(s) solely
applicable to:  (x) Cholestech Technology, then ownership therein shall be
solely in Cholestech; or (y) Metra Technology, then ownership therein shall be
solely in Metra.    Each party shall fully cooperate in assuring that all rights
in and to such inventions and discoveries are fully vested in the other party in
accordance with this Section 9.2.  Each party

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shall promptly notify the other party of any such inventions or discoveries set
forth in this Section 9.2.

SECTION 10:  REPRESENTATIONS AND WARRANTIES

10.1     BY CHOLESTECH. Cholestech hereby represents and warrants to Metra that:
(i) Cholestech has the right to enter into and perform its obligations under
this Agreement and that to the best of Cholestech's knowledge and belief the
execution, delivery and performance of this Agreement does not conflict with,
violate, or breach any agreement to which Cholestech is a party, or with
Cholestech's Articles of Incorporation or Bylaws; (ii) to the best of
Cholestech's knowledge and belief, the execution, delivery, and performance of
this Agreement does not conflict with, violate, or breach any agreement filed by
Cholestech as a "material contract" pursuant to Item 601(b)(10) of Regulation S-
K under The Securities Act of 1933, as amended, or with Cholestech's Articles of
Incorporation or Bylaws; (iii) to the best of its knowledge and belief as of the
Effective Date of this Agreement, the manufacture, use, sale, offer to sell or
importing of Licensed Product and Future Licensed Products based on the
Cholestech Technology in the Territory does not infringe or violate any patent,
trademark, or copyright or any other intellectual property or proprietary rights
of any third party, and during the Term of this Agreement Cholestech shall
discuss and report to the Development Committee any knowledge or belief that the
manufacture, use, sale, offer to sell, or importing of the Licensed Product or
Future Licensed Products based on the Cholestech Technology in the Territory
infringes or violates any patent, trademark, or copyright or any other
intellectual property or proprietary rights of any third party; (iv) to the best
of Cholestech's knowledge and belief as of the Effective Date of this Agreement,
there are no pending actions, either actual or threatened, relating to
Cholestech Technology or Cholestech Patents; and (v) the Cholestech Patents
and/or Cholestech Technology have not knowingly been obtained through any
activity, omission or representation that would limit or destroy the validity of
the Cholestech Patents and/or Cholestech Technology and Cholestech has no
knowledge or information that would materially impact the validity and/or
enforceability of the existing Cholestech Patents and/or Cholestech Technology.

10.2     BY METRA.  Metra hereby represents and warrants to Cholestech that: (i)
Metra has the right to enter into and perform Metra's obligations under this
Agreement and to grant the license and sublicense granted herein, and to supply
the Reagents; (ii) to the best of Metra's knowledge and belief, the execution,
delivery, and performance of this Agreement does not conflict with, violate, or
breach any agreement filed by Metra as a "material contract" pursuant to Item
601(b)(10) of Regulation S-K under The Securities Act of 1933, as amended, or
with Metra's Articles of Incorporation or Bylaws; (iii) to the best of its
knowledge and belief as of the Effective Date of this Agreement, the
manufacture, use, sale, offer to sell or importing of Licensed Product and
Future Licensed Products based on the Metra Technology in the Territory does not
infringe or violate any patent, trademark, or copyright or any other
intellectual property or proprietary rights of any third party, and during the
Term of this Agreement Metra shall discuss and report to the Development
Committee any knowledge or belief that the manufacture, use, sale, offer to
sell, or importing of the Licensed Product or Future Licensed Products based on
the Metra Technology in the Territory infringes or violates any patent,
trademark, or copyright or any other intellectual property or proprietary rights
of any third party; (iv) to the

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL

                                         -17-

<PAGE>

                                                                   CONFIDENTIAL

best of Metra's knowledge and belief, there are no pending actions, either
actual or threatened, relating to Metra Technology or Metra Patents; and (v) the
Metra Patents and/or Metra Technology have not knowingly been obtained through
any activity, omission or representation that would limit or destroy the
validity of the Metra Patents and/or Metra Technology and Metra has no knowledge
or information that would materially impact the validity and/or enforceability
of the existing Metra Patents and/or Metra Technology.

10.3     MUTUAL.  The parties hereby represent and warrant to each other that
they will reasonably promptly keep the other party hereto informed of all
material information concerning Licensed Products and Future Licensed Products.

10.4     DISCLAIMER OF WARRANTIES.  EXCEPT AS SPECIFICALLY SET FORTH HEREIN,
NEITHER PARTY MAKES ANY OTHER REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE OR USE AND ANY OTHER STATUTORY WARRANTIES.

SECTION 11:  INDEMNIFICATION

11.1     BY METRA.  Subject to the provisions of Section 11.3 hereto, Metra
hereby agrees at all times during the Term of this Agreement to be responsible
for, and to indemnify, defend and hold harmless Cholestech from and against any
and all claims, actions, proceedings, expenses, liabilities or losses, including
reasonable legal expenses and costs, including attorney fees:  (i) arising from
or based on a breach of Metra's representations and warranties contained in
Section 10.2 hereto; (ii) resulting from personal injury, product liability or
property damage relating to or arising from the manufacture, use or sale of
Reagents by Cholestech or its Affiliates; and (iii) any third party claims,
suits, actions, proceedings, liabilities or losses arising from infringement or
violation of any patent, trademark, or copyright or any other intellectual
property or proprietary rights of such third party arising from the manufacture,
use, sale, offer to sell or importing of Reagents in the Territory; UNLESS and
to the extent such claims, actions, proceedings, liabilities or losses arise
from Cholestech Technology as such Cholestech Technology is supplied by
Cholestech, or unless and to the extent that such claims, actions, proceedings,
liabilities or losses arise from the gross negligence or intentional misconduct
of Cholestech, either in whole or in part.

11.2     BY CHOLESTECH.  Subject to the provisions of Section 11.3 hereto,
Cholestech hereby agrees to indemnify, defend and hold harmless Metra from and
against any and all claims, actions, proceedings, liabilities or losses,
including reasonable legal expenses and costs, including attorney fees:  (i)
arising from or based on a breach of Cholestech's representations and warranties
contained in Section 10.1 hereto; (ii) resulting from personal injury, product
liability or property damage relating to or arising from the manufacture, use or
sale of Licensed Products or Future Licensed Products by Cholestech or its
Affiliates, unless and to the extent such claims, actions, proceedings,
liabilities or losses arise from Reagent(s) as such Reagent(s) is (are) supplied
by Metra, or unless and to the extent that such claims, actions, proceedings,
liabilities or losses arise from the gross negligence or intentional misconduct
of Metra, either in whole or in

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                                                                   CONFIDENTIAL

part; and (iii) any third party claims, suits, actions, proceedings, liabilities
or losses arising from infringement or violation of any patent, trademark, or
copyright or any other intellectual property or proprietary rights of such third
party arising from the manufacture, use, sale, offer to sell or importing of
Licensed Product and Future Licensed Products in the Territory, unless and to
the extent such claims, suits, actions, proceedings, liabilities or losses arise
from Reagent(s) as such Reagent(s) is (are) supplied by Metra, or unless and to
the extent that such claims, suits, actions, proceedings, liabilities or losses
arise from the gross negligence or intentional misconduct of Metra, either in
whole or in part.

11.3     NOTIFICATION.  The parties shall promptly notify each other of any
claims or suits with respect to which indemnification is sought.  The party
requesting indemnification shall permit the indemnifying party to assume the
defense of such claims or suits giving rise to the request at the indemnifying
party's expense.  The requesting party shall cooperate with the indemnifying
party in such defense when reasonably requested to do so.  No settlement or
compromise shall be binding on a party to this Agreement without such party's
prior written consent, such consent not to be unreasonably withheld.

11.4     LIMITATION OF LIABILITY.  IN NO EVENT WILL EITHER PARTY HERETO BE
LIABLE FOR ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL OR INDIRECT DAMAGES SUFFERED
BY THE OTHER PARTY ARISING IN ANY WAY OUT OF THIS AGREEMENT, HOWEVER CAUSED
AND ON ANY THEORY OF LIABILITY; PROVIDED HOWEVER, THAT THE FOREGOING LIMITATION
SHALL NOT APPLY TO A BREACH BY EITHER PARTY OF SECTION 12.  THIS LIMITATION WILL
APPLY EVEN IF THE PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

11.5     ACTION AGAINST INFRINGERS.  If during the term of this Agreement,
either party becomes aware of a third party infringement or threatened
infringement of any Cholestech Patent or Metra Patent in the Territory, or any
misappropriation of Cholestech Technology or Metra Technology that is
incorporated in or related to Licensed Product or Future Licensed Products, the
following provisions shall apply:

    11.5.1    The party having such knowledge shall promptly give notice to the
other party, with all available details.

    11.5.2    Metra shall have the right, but not the obligation, to pursue in
its name at its own expense efforts to restrain such infringement and to recover
profits and damages if such infringement relates to Metra Technology or Metra
Patents.  Cholestech agrees at Metra's request to cooperate in the pursuit
thereof, as is reasonably necessary, at Metra's expense.  If Metra decides to
undertake such action, then Metra shall have the sole right to control
prosecution but Metra shall keep Cholestech informed on a regular basis as to
the status of such action.

    11.5.3    If Metra fails to take action within [                        ] 
after becoming aware of such infringement, in the first instance or by notice 
from Cholestech, then Cholestech, at any time prior to Metra thereafter taking 
action, shall have the right, but not the obligation to take such action in its
own name or in the name of Metra as it deems necessary or appropriate;

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                                                                   CONFIDENTIAL

PROVIDED, HOWEVER, that:  (i) such infringement arises out of activities
occurring in the territories [                                       ]; (ii) 
such infringement relates to Metra Technology or Metra Patents in or covering 
Licensed Product or Future Licensed Products; (iii) [                      ]; 
and (iv) Cholestech shall not settle any such action without Metra's prior 
consent, which shall not be unreasonably
withheld.  In the event that Cholestech exercises its rights under this Section
11.5.3, Metra shall have the right to observe in any such action hereunder, and
Cholestech shall pay for Metra's reasonable attorneys fees associated with such
observation.  Metra shall cooperate with Cholestech, at Cholestech's expense, as
is reasonably necessary in any such action brought by Cholestech.  If Cholestech
brings legal action, Cholestech shall have the sole right to control prosecution
and shall be entitled to the full share of any recovery, including all of
Cholestech's lost profits and damages.

    11.5.4    Cholestech shall have the right, but not the obligation, to
pursue in its name at its own expense efforts to restrain such infringement and
to recover profits and damages if such infringement relates to Cholestech
Technology or Cholestech Patents.  Metra agrees at Cholestech's request to
cooperate in the pursuit thereof, as is reasonably necessary, at Cholestech's
expense.  If Cholestech decides to undertake such action, then Cholestech shall
have the sole right to control prosecution but Cholestech shall keep Metra
informed on a regular basis as to the status of such action.

    11.5.5    If Cholestech fails to take action within [                  ] 
after becoming aware of such infringement, in the first instance or by notice 
from Metra, then Metra, at any time prior to Cholestech thereafter taking 
action, shall have the right, but not the obligation to take such action in 
its own name or in the name of Cholestech as it deems necessary or appropriate;
PROVIDED, HOWEVER, that:  (i) such infringement arises out of activities 
occurring in the territories [             ]; (ii) such infringement relates to 
Cholestech Technology or Cholestech Patents in or covering Licensed Product or
Future Licensed Products and relates to a biochemical marker that is competitive
with a biochemical marker in the Licensed Product or Future Licensed Products,
exclusive of any Cholestech Technology or Cholestech Patents in or covering
Cholestech's L-D-X-Registered Trademark- point-of-care instrument; (iii) 
[                                                   ]; and (iv) Metra shall not
settle any such action without Cholestech's prior consent, which shall not be
unreasonably withheld.  In the event that Metra exercises its rights under this
Section 11.5.5, Cholestech shall have the right to observe in any such action
hereunder, and Metra shall pay for Cholestech's reasonable attorneys fees
associated with such observation.  Cholestech shall cooperate with Metra, at
Metra's expense, as reasonably necessary in any action brought by Metra.  If
Metra brings legal action, Metra shall have the sole right to control such
action and shall be entitled to the full amount of any recovery, including all
of Metra's lost profits and damages.

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                                                                   CONFIDENTIAL

SECTION 12:  CONFIDENTIALITY

12.1     "CONFIDENTIAL INFORMATION" shall mean any and all non-public and
proprietary information, including, without limitation, information relating to
the Technical Information of the other party, the Cholestech Patents, Cholestech
Technology, Cholestech Inventions, Metra Patents, Metra Technology, Metra
Inventions, or Joint Inventions, and the business plans of the other party,
including information provided by either party to the other party prior to the
Effective Date, which such party knows or has reason to know are or contain
trade secrets or other proprietary information of the other, and which is
specifically designated as such and which is disclosed by either party to the
other in any form in connection with this Agreement, and if orally disclosed, is
reduced in writing and provided to the other party within thirty (30) days of
such disclosure.  During the term of this Agreement and thereafter, each party
shall maintain in confidence all Confidential Information and materials
disclosed by the other party and shall not use such Confidential Information for
any purpose except as permitted by this Agreement or disclose the same to anyone
other than those of its Affiliates, sublicensees, employees, consultants, agents
or subcontractors as are necessary in connection with such party's activities as
contemplated in this Agreement.  Each party shall obtain a written agreement
from any sublicensees, employees, consultants, agents and subcontractors, prior
to disclosure, to hold in confidence and not make use of such Confidential
Information for any purpose other than those permitted by this Agreement.

12.2     EXCEPTIONS.  Notwithstanding the above, neither party shall have
liability to the other with regard to any Confidential Information that:  (i)
was generally known and available to the public domain at the time it was
disclosed, or becomes generally known and available to the public domain through
no fault of the receiving party; (ii) was known to the receiving party, or was
independently developed by or on behalf of the receiving party without benefit
of Confidential Information prior to the time of disclosure as shown by the
written records in existence at the time of disclosure; (iii) is disclosed with
the prior written approval of the disclosing party; (iv) becomes known to the
receiving party from a source other than the disclosing party without breach of
this Agreement by the receiving party and in a manner which is otherwise not in
violation of the disclosing party's rights; or (v) is disclosed by the receiving
party pursuant to the order or requirement of a court, administrative agency, or
other governmental body; PROVIDED, HOWEVER, that the receiving party shall
provide reasonable advance notice to enable the disclosing party to seek a
protective order or otherwise prevent such disclosure, or necessary to comply
with the rules and regulations promulgated by the Securities and Exchange
Commission.

12.3     AGREEMENT AND TERMS CONFIDENTIAL.  Unless otherwise agreed to in
writing or as necessary to comply with a valid legal order of a court of law or
agency of competent jurisdiction or with the rules and regulations promulgated
by the Securities and Exchange Commission, both the existence and terms of this
Agreement shall be kept confidential by the parties.

12.4     PUBLICATION.  Both parties agree not to publish any reports or papers,
make any public presentation or otherwise publicly disseminate any information
relating to any aspect of the development or manufacture of Licensed Product or
Future Licensed Products which includes

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL
                                         -21-

<PAGE>

                                                                   CONFIDENTIAL

Confidential Information or other documentation or data belonging to the other,
including any reference to Metra Technology or Cholestech Technology, and which
was received pursuant to the terms of this Agreement without first obtaining
written consent of the other party hereto, unless and to the extent disclosure
of such documentation or data is necessary to comply with any law or government
regulations, and provided further that the non-publishing party is so notified.
Both parties also agree to provide each other with a manuscript of any proposed
publication or written summary of any proposed oral disclosure at least thirty
(30) days prior to submission thereof for publication and to incorporate any
changes in such manuscript as are necessary to protect the Confidential
Information of the non-publishing party.  Cholestech and Metra may also require
the other to include an acknowledgment of its role in any study to be published.

SECTION 13:  TERM AND TERMINATION

13.1     TERM AND EXPIRATION.  The term of this Agreement shall be ten (10)
years from the Effective Date (the "TERM") and, in the event that the Licensed
Product is commercially released within such Term, the parties hereto agree to
negotiate in good faith to extend the Term of this Agreement.  This Agreement
may be terminated at any time upon mutual agreement of the parties.  Termination
or expiration of this Agreement shall not release any party hereto from any
liability which, at the time of such termination or expiration, has already
accrued to the other party, or which is attributable to such termination or
expiration, nor shall it preclude either party from pursuing all rights and
remedies it may have hereunder or at law or in equity with respect to any breach
of this Agreement.

13.2     TERMINATION WITH CAUSE.  Upon any material breach of this Agreement by
either party, the non-breaching party may terminate this Agreement upon [
          ] written notice to the breaching party.  The notice shall become
effective at the end of the [              ] period unless the breaching party
shall cure such breach within such period.  Metra shall have the right to
terminate this Agreement if all development milestones in the Milestone Schedule
set forth in EXHIBIT B attached hereto have not been achieved within two (2)
years following the Effective Date.

13.3     RIGHTS BY METRA UPON TERMINATION.  In the event that Metra terminates
this Agreement pursuant to Section 13.2, and Cholestech desires to retain
distribution rights for the Licensed Product, and/or Future Licensed Products,
Cholestech shall have a limited non-exclusive, royalty-bearing right and license
to distribute the Licensed Product in the Territory for so long as Cholestech
pays to Metra a royalty of [                 ] of the [                     ]
for the Licensed Product (the "TERMINATION ROYALTIES"); PROVIDED, HOWEVER, 
[                                 ]. Upon such termination by Metra, Metra will 
continue to supply Reagents to Cholestech at 
a cost to Cholestech of [                                      ].

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                                                                   CONFIDENTIAL

13.4     RIGHT TO SELL STOCK ON HAND.  Upon the termination of any license
granted hereunder for any reason other than a failure to cure a material breach
of this Agreement as set forth in Section 13.2 by Cholestech, Cholestech shall
have the right for [          ] thereafter to dispose of all Licensed Product
and Future Licensed Product then on hand to which such termination applies, and
any royalties due and owing shall be paid to Metra with respect to Net Sales of
such Licensed Product and Future Licensed Product as though such license had not
terminated.

13.5     BANKRUPTCY.  All rights and licenses granted under or pursuant to this
Agreement by Metra to Cholestech in respect of Metra Patents and Metra
Technology are and shall otherwise be deemed to be, for purposes of Section
365(n) of the Bankruptcy Code, licenses of rights to "Intellectual Property" as
defined under Section 101(57) of the Bankruptcy Code.  The parties agree that
Cholestech, as licensee of such rights and licenses, shall retain and may fully
exercise all of its rights and elections under the Bankruptcy Code.  The parties
further agree that, in the event that any proceeding shall be instituted by or
against Metra seeking to adjudicate it as bankrupt or insolvent, or seeking
liquidation, winding up, reorganization, arrangement, adjustment, protection,
relief or composition of it or its debts under any law relating to bankruptcy,
insolvency, or reorganization or relief of debtors, or seeking an entry of any
order for relief or the appointment of a receiver, trustee or other similar
official for it for any substantial part of its property or if it shall take any
action to authorize any of the foregoing actions (each "PROCEEDING"), Cholestech
shall have the right to retain and enforce its rights under this Agreement,
including, but not limited to the following rights:

         (i)       The right to continue to use the Licensed Product and Future
Licensed Products and all versions and derivatives thereof, and all
documentation and other supporting material relating thereto, in accordance with
the terms and conditions of this Agreement;

         (ii)      The right to a complete duplicate of (or complete access to,
as appropriate) all Metra Patents and Metra Technology, if not already in
Cholestech's possession, which shall be promptly delivered to Cholestech upon
any such commencement of a Proceeding upon written request therefore by
Cholestech, unless Metra elects to continue to perform all of its obligations
under this Agreement; or if not otherwise delivered upon rejection of this
Agreement by or on behalf of Metra upon written request therefore by Cholestech;
and

         (iii)     The right to obtain from Metra all documentation and
supporting documents relating to the Licensed Product and Future Licensed
Products and all versions and derivatives thereof.

SECTION 14:  MISCELLANEOUS PROVISIONS

14.1     RELATIONSHIP OF PARTIES.  Cholestech and Metra shall be independent
contractors and shall not be deemed to be parties, joint venturers or each
other's agents or employees, and neither party shall have the right to act on
behalf of the other except as is expressly set forth in this Agreement.


14.2     SURVIVAL.  The provisions of Sections 1, 5.5, 6.3(c), 6.3(d), 6.3(e),
9, 10, 11, 12, 13.3, 13.4, and 14, shall survive termination or expiration of
this Agreement.

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                                                                   CONFIDENTIAL

14.3     ENTIRE AGREEMENT.  This Agreement sets forth the entire agreement and
understanding between the parties and supersedes all previous agreements,
promises, representations, understandings, and negotiations, whether written or
oral between the parties with respect to the subject matter hereof.  There shall
be no amendments or modifications to this Agreement, except by a written
document signed by both parties.

14.4     ASSIGNMENT.  This Agreement shall not be assigned by either party
without the prior written consent of the other party, except as part of a sale
or transfer, by way of merger or otherwise, of all or substantially all of the
business assets of such party to which this Agreement relates, and provided
further that the assignee agrees to be bound in writing by all the terms of
this Agreement in place of the assignor, or the assignor agrees to remain
responsible for the obligations of the assignee pursuant to the terms set
forth herein.

14.5     BINDING UPON SUCCESSORS AND ASSIGNS.  This Agreement shall be binding
upon and inure to the benefit of successors in interest and assigns of Metra and
Cholestech subject to the limitations on assignment.

14.6     GOVERNING LAW; DISPUTES AND ALTERNATIVE DISPUTE RESOLUTION.  This
Agreement shall be construed and enforced in accordance with the laws of the
State of California, without giving effect to its principles of conflicts of
law.  Any dispute or claim arising out of or in connection with this Agreement
(unless otherwise set forth herein) shall be resolved in accordance with the
provisions set forth herein and attached as EXHIBIT C attached hereto.

14.7     SEVERABILITY.  If any provision of this Agreement is finally held to be
invalid, illegal or unenforceable by a court or agency of competent
jurisdiction, that provision shall be severed or shall be modified by the
parties so as to be legally enforceable (and to the extent modified, it shall be
modified so as to reflect, to the extent possible, the intent of the parties)
and the validity, legality and enforceability of the remaining provisions shall
not be affected or impaired in any way.

14.8     NO WAIVER.  Any delay in enforcing a party's rights under this
Agreement or any waiver as to a particular default or other matter shall not
constitute a waiver of a party's right to the future enforcement of its rights
under this Agreement.

14.9     ATTORNEY'S FEES.  In the event of a dispute under this Agreement
between the parties, or in the event of any default, the party prevailing in
the resolution of any such dispute or default shall be entitled to request a
recovery of its attorneys' fees and other costs.

14.10    NOTICES.  Any notice required or permitted by this Agreement to be
given to either party shall be in writing and shall be deemed given when
delivered personally, by confirmed telecopy to a fax number designated in
writing by the party to whom notice is given, or by registered, recorded or
certified mail, return receipt requested, and addressed to the party to whom
such notice is directed, at:

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                                                                   CONFIDENTIAL

If to Cholestech:  Cholestech Corporation
                   3347 Investment Boulevard
                   Hayward, CA  94545
                   Telephone:     510-732-7200
                   Facsimile:     510-732-7227
                   Attention:     President and CEO


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                                         -25-

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                                                                   CONFIDENTIAL

with a copy to:    Robert P. Latta, Esq.
                        Wilson, Sonsini, Goodrich & Rosati
                        650 Page Mill Road
                        Palo Alto, CA  94304
                        Telephone:     415-493-9300
                        Facsimile:     415-493-6811

If to Metra:       Metra Biosystems Inc.              cc:  Mark Weeks, Esq.
                   265 North Whisman Road             Venture Law Group
                   Mountain View, CA 94043            2800 Sand Hill Road
                   Telephone: 415-903-9100            Menlo Park, CA 94025
                   Fax: 415-903-0500                  Telephone: 415-854-4488
                   Attention: George W. Dunbar, Jr.   Fax: 415-854-1121

or at such other address or telecopy number as such party to whom notice is
directed may designate to the other party in writing.

14.11    PUBLIC ANNOUNCEMENTS.  The parties will cooperate to create
appropriate public announcements of the relationship set forth in this
Agreement.  Neither party shall make any public announcement regarding the
existence or content of this Agreement without the other party's prior written
approval and consent.

14.12  FORCE MAJEURE.  If the performance of this Agreement or any obligations
hereunder is prevented, restricted or interfered with by reason of fire or other
casualty or accident, strikes or labor disputes, war or other violence, any law,
order, proclamation, ordinance, demand or requirement of any government agency,
or any other act or condition beyond the control of the parties hereto, the
party so affected, upon giving prompt notice to the other party shall be excused
from such performance (other than the obligation to pay money) during such
prevention, restriction or interference.

14.13    NO RIGHT OF PUBLICITY.   Except as otherwise provided herein, no
right, express or implied, is granted by this Agreement to either party to use
in any manner the name of Cholestech or Metra or any other trade name or
trademark of the other party in connection with the performance of this
Agreement.

14.14     COUNTERPARTS.  This Agreement shall be fully executed in two (2)
original counterparts, each of which shall be deemed an original.


                              [INTENTIONALLY LEFT BLANK]

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                                                                   CONFIDENTIAL

    IN WITNESS WHEREOF, authorized officers of each of Cholestech and Metra
have executed this Agreement as of the date first set forth above.


METRA BIOSYSTEMS, INC.                 CHOLESTECH CORPORATION



By:                                    By:
    --------------------                    --------------------
    George W. Dunbar, Jr.                   Warren E. Pinckert II
    President and CEO                       President and CEO


Date:                                  Date:
     -------------------                     -------------------

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                                                                   CONFIDENTIAL

                                      EXHIBIT A
                           LICENSED PRODUCT SPECIFICATIONS



Analytes                     Deoxypyridinoline (nM) and Creatinine (mM), with
                             L-D-X-Registered Trademark- capable of displaying
                             the Dpd, creatinine, and normalized results on LCD
                             and provide printed results

Format                       Runs on existing L-D-X-Registered Trademark-
                             platform with ROM upgrade only

Assay Protocol               Suitable for CLIA waved status

Total Assay Time             Less than 10 minutes

Sample                            First or second morning void urine

Correlation to Pyrilinks
  -Registered Trademark--D   [                           ]
                              -
Reference Range
(normalized)                 [                                     ]

Dynamic Range                [               ]

Between-run precision        [         ]
                             -
Between-lot precision        [         ]
                             -
Spike recovery & linearity   [          ]               [           ]
                                                    -
                             [                 ]
                                                    -
                             [                 ]
                                                    -

Cassette Shelf Life          [                       ]

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<PAGE>

                                                                   CONFIDENTIAL

                                      EXHIBIT B
                          DEVELOPMENT AND MILESTONE SCHEDULE


DEVELOPMENT STEPS                 [            ]

1.  Set specifications            [      ]
2.  Design cassette               [  ]
3.  Fabricate prototypes          [  ]
4.  Design tools                  [  ]
5.  Scale-up (pilot mfg)          [  ]
6.  Run clinical trials           [  ]
7.  Submit data to FDA            [  ]

MILESTONES                        DATE (EST.)

1.  Sign Agreement                5/96
    [                  ]          [     ]
    [                  ]          [     ]
    [                  ]          [     ]

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL

<PAGE>

                                                                   CONFIDENTIAL

                                      EXHIBIT C

                     ALTERNATIVE DISPUTE RESOLUTION MECHANISM FOR
               CHOLESTECH/METRA DEVELOPMENT, LICENSE AND DISTRIBUTION
                                      AGREEMENT

1.  MEDIATION

    In the event that any dispute or claim arising out of or related to this
Agreement is not settled by the parties within the fifteen (15) day negotiation
period, the parties will attempt in good faith to resolve such dispute or claim
by mediation in San Francisco, California, in accordance with the American
Arbitration Association Commercial Mediation Rules.  The mediation shall be held
within thirty (30) days of the end of the fifteen day negotiation period.
Nothing herein, however, shall prohibit either party from initiating arbitration
proceedings if such party would be substantially prejudiced by a failure to act
during the time that such good faith efforts are being made to resolve the
dispute or claim through negotiation or mediation.  The cost of mediation shall
be shared equally by the parties to the mediation.  Any settlement reached by
mediation shall be reduced to writing, signed by the parties, and shall be
binding on them.

2.  ARBITRATION

    Any dispute or claim arising out of or related to this Agreement, or the
interpretation, making, performance, breach, validity or termination thereof,
which has not been resolved by negotiation or mediation as set forth above,
shall be finally settled by binding arbitration in San Francisco, California,
under the Commercial Arbitration Rules and the Supplementary Procedures for
Large Complex Disputes of the American Arbitration Association (together with
"AAA Rules") by one arbitrator appointed in accordance with the AAA Rules.

    This Agreement shall be governed by the law of the state of California.
The arbitrator shall apply California law to the merits of any dispute or claim,
without reference to rules of conflict of law.  The arbitrator shall have the
power to decide all questions of arbitrability.  The arbitration proceedings
shall be governed by federal arbitration law and by the AAA Rules, without
reference to state arbitration law.  At the request of either party, the
arbitrator will enter an appropriate protective order to maintain the
confidentiality of information produced or exchanged in the course of the
arbitration proceedings.  Judgment on the award rendered by the arbitrator may
be entered in any court having jurisdiction thereof.

    The parties may apply to any court of competent jurisdiction for a
temporary restraining order, preliminary injunction, or other interim or
conservatory relief, as necessary, without breach of this arbitration agreement
and without any abridgment of the powers of the arbitrator.

    The arbitrator may award to the prevailing party, if any, as determined by
the arbitrator, all of its costs and fees, including, without limitation, AAA
administrative fees, arbitrator fees,

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL

<PAGE>

                                                                   CONFIDENTIAL

travel expenses, out-of-pocket expenses (including, without limitation, such
expenses as copying, telephone, facsimile, postage, and courier fees), witness
fees, and reasonable attorneys' fees.

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL

<PAGE>

                                                                   CONFIDENTIAL

                                      EXHIBIT D
                                 INVESTMENT SCHEDULE


I.  EQUITY INVESTMENT FUNDING

1.  MILESTONE:          Execution of Agreement.
    EQUITY INVESTMENT:  $250,000
    Payable by Metra upon execution of this Agreement.  Funding to be used to
conduct further development work to [                                   ]
Purchase price for the shares will be determined by calculating a volume
weighted average based on the five (5) day trading average before the completion
of such milestone.

2.  MILESTONE:     [                             ].
    EQUITY INVESTMENT:  [                 ]
    Purchase price for the shares will be determined by calculating a volume
weighted average based on the five (5) day trading average before the completion
of such milestone.

3.  MILESTONE:     [                               ]
    EQUITY INVESTMENT:  [                 ]
    Purchase price for the shares will be determined by calculating a volume
weighted average based on the five (5) day trading average before the completion
of such milestone.


II. LOANS TO CHOLESTECH

    The following two milestones are subject to the provisions of Section 6.3
of this Agreement:

4.  MILESTONE:     [                               ]

    LOAN AMOUNT:   [                      ]

5.  MILESTONE:     [                      ]

    LOAN AMOUNT:   [                ]

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL

<PAGE>

                                                                   CONFIDENTIAL

                                      EXHIBIT E
                        FORM OF REGISTRATION RIGHTS AGREEMENT

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL

<PAGE>

                                                                   CONFIDENTIAL

                                      EXHIBIT F
                                      TRADEMARKS

I.  METRA TRADEMARKS

Pyrilinks-Registered Trademark--D
Metra Biosystems


II. CHOLESTECH TRADEMARKS

Cholestech L-D-X-Registered Trademark-
Cholestech

FINAL FRIDAY, MAY 03, 1996                                         CONFIDENTIAL


<PAGE>

                                                                  EXHIBIT 10.16

                                    EXHIBIT E

                             CHOLESTECH CORPORATION

                          REGISTRATION RIGHTS AGREEMENT

     This Registration Rights Agreement ("Agreement") is made as of May 3, 1996,
by Cholestech Corporation (the "Company") and Metra Biosystems, Inc. ("Metra")
pursuant to that Development, License and Distribution Agreement dated as of May
3, 1996 (the "Development Agreement").

                                    SECTION 1

                        RESTRICTIONS ON TRANSFERABILITY;

                               REGISTRATION RIGHTS

     1.1  CERTAIN DEFINITIONS.  As used in this Agreement, the following terms
shall have the following respective meanings:

          "COMMISSION" shall mean the Securities and Exchange Commission or any
other federal agency at the time administering the Securities Act.

          "HOLDER" shall mean Metra and any person holding Registrable
Securities to whom the rights under this Agreement have been transferred in
accordance with Section 1.14 hereof.

          The terms "REGISTER," "REGISTERED" and "REGISTRATION" refer to a
registration effected by preparing and filing a registration statement in
compliance with the Securities Act, and the declaration or ordering of the
effectiveness of such registration statement.

          "REGISTRATION EXPENSES" shall mean all expenses incurred by the
Company in complying with Sections 1.5, 1.6 and 1.7 of this Agreement,
including, without limitation, all registration, qualification and filing fees,
printing expenses, escrow fees, fees and disbursements of counsel for the
Company, blue sky fees and expenses, and the expense of any special audits
incident to or required by any such registration (but excluding (i) the
compensation of regular employees of the Company which shall be paid in any
event by the Company, and (ii) the fees and costs of any legal counsel of
Metra).

          "REGISTRABLE SECURITIES" means (i) the Common Stock issuable or issued
to Metra pursuant to the Development Agreement (the "Stock") and (ii) any Common
Stock of the Company issued or issuable in respect of the Stock or other
securities issued or issuable with respect to the Stock upon any stock split,
stock dividend, recapitalization, or similar event; PROVIDED, HOWEVER, that
shares of Common Stock or other securities shall only be treated as Registrable
Securities if and so long as they have not been (A) sold to or through a broker
or

<PAGE>

dealer or underwriter in a public distribution or a public securities
transaction, or (B) sold in a transaction exempt from the registration and
prospectus delivery requirements of the Securities Act under Section 4(1)
thereof so that all transfer restrictions and restrictive legends with respect
thereto are removed upon the consummation of such sale.

          "RESTRICTED SECURITIES" shall mean the securities of the Company
required to bear the legend set forth in Section 1.3 of this Agreement.

          "SECURITIES ACT" shall mean the Securities Act of 1933, as amended, or
any similar federal statute and the rules and regulations of the Commission
thereunder, all as the same shall be in effect at the time.

          "SELLING EXPENSES" shall mean all underwriting discounts, selling
commissions and stock transfer taxes applicable to the securities registered by
the Holders and all fees and disbursements of counsel for the Holders (except as
provided by Section 1.9).

     1.2  RESTRICTIONS.  The Stock shall not be sold, assigned, transferred or
pledged except upon the conditions specified in this Agreement, which conditions
are intended to ensure compliance with the provisions of the Securities Act.
Metra will cause any proposed purchaser, assignee, transferee or pledgee of the
Stock to agree to take and hold such securities subject to the provisions and
upon the conditions specified in this Agreement.

     1.3  RESTRICTIVE LEGEND.  Each certificate representing (i) the Stock and
(ii) any other securities issued in respect of the Stock upon any stock split,
stock dividend, recapitalization, merger, consolidation or similar event, shall
(unless otherwise permitted by the provisions of Section 1.4 below) be stamped
or otherwise imprinted with a legend in the following form (in addition to any
legend required under applicable state securities laws):

     "THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
     1933.  THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN
     THE ABSENCE OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT TO THE
     SECURITIES UNDER SUCH ACT OR AN OPINION OF COUNSEL SATISFACTORY TO THE
     COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED OR UNLESS SOLD PURSUANT TO
     RULE 144 OF SUCH ACT."

     Metra consents to the Company making a notation on its records and giving
instructions to any transfer agent of the Restricted Securities in order to
implement the restrictions on transfer established in this Section 1.

     1.4  NOTICE OF PROPOSED TRANSFERS.  The holder of each certificate
representing restricted securities, by acceptance thereof, agrees to comply in
all respects with the provisions of this Section 1.  Prior to any proposed sale,
assignment, transfer or pledge of any restricted securities, unless there is in
effect a registration statement under the Securities Act covering the proposed
transfer, the holder thereof shall give written notice to the Company of such
holder's intention to effect such transfer, sale, assignment or pledge.  Each
such notice shall describe the

                                       -2-

<PAGE>

manner and circumstances of the proposed transfer, sale, assignment or pledge in
sufficient detail, and shall be accompanied at such holder's expense by either
(i) an unqualified written opinion of legal counsel who shall, and whose legal
opinion shall be, reasonably satisfactory to the Company, addressed to the
Company, to the effect that the proposed transfer of the restricted securities
may be effected without registration under the Securities Act, or (ii) a "no
action" letter from the Commission to the effect that the transfer of such
securities without registration will not result in a recommendation by the staff
of the Commission that action be taken with respect thereto, whereupon the
holder of such restricted securities shall be entitled to transfer such
restricted securities in accordance with the terms of the notice delivered by
the holder to the Company.  The Company will not require such a legal opinion or
"no action" letter (a) in any transaction in compliance with Rule 144, or (b) in
any transaction in which Metra distributes restricted securities after six (6)
months after the purchase thereof solely to its majority-owned subsidiaries or
affiliates for no consideration, provided that each transferee agrees in writing
to be subject to the terms of this Section 1.4.  Each certificate evidencing the
restricted securities transferred as above provided shall bear, except if such
transfer is made pursuant to Rule 144, the appropriate restrictive legend set
forth in Section 1.3 above, except that such certificate shall not bear such
restrictive legend if, in the opinion of counsel for such holder and the
Company, such legend is not required in order to establish compliance with any
provisions of the Securities Act.

     1.5  REQUESTED REGISTRATION.

          (a)  REQUEST FOR REGISTRATION. In the event a Holder requests a
registration on Form S-3 pursuant to Section 1.7 below and the Company is not
entitled to use Form S-3 to register the Registrable Securities, the Company
will:

              (i)   promptly give written notice of the proposed registration,
qualification or compliance to all other Holders; and

             (ii)        as soon as practicable, use its best efforts to effect
such registration, qualification or compliance (including, without limitation,
the execution of an undertaking to file post-effective amendments, appropriate
qualification under applicable blue sky or other state securities laws and
appropriate compliance with applicable regulations issued under the Securities
Act and any other governmental requirements or regulations) as may be so
requested and as would permit or facilitate the sale and distribution of all or
such portion of such Registrable Securities as are specified in such request,
together with all or such portion of the Registrable Securities of any Holder or
Holders joining in such request as are specified in a written request received
by the Company within fifteen (15) days after receipt of such written notice
from the Company; PROVIDED, HOWEVER, that the Company shall not be obligated to
take any action to effect any such registration, qualification or compliance
pursuant to this Section 1.5:

                    (1)  In any particular jurisdiction in which the Company
would be required to execute a general consent to service of process in
effecting such registration, qualification or compliance unless the Company is
already subject to service in such jurisdiction and except as may be required by
the Securities Act;

                                       -3-

<PAGE>

                    (2)  During the period starting with the date sixty (60)
days prior to the Company's estimated date of filing of, and ending on the date
six (6) months immediately following the effective date of, any registration
statement pertaining to securities of the Company (other than a registration of
securities in a Rule 145 transaction or with respect to an employee benefit
plan), provided that the Company is actively employing in good faith all
reasonable efforts to cause such registration statement to become effective and
that the Company's estimate of the date of filing such registration statement is
made in good faith; or

                    (3)  If the Company shall furnish to such Holders a
certificate, signed by the President of the Company, stating that in the good
faith judgment of the Board of Directors it would be seriously detrimental to
the Company or its shareholders for a registration statement to be filed in the
near future, then the Company's obligation to use its best efforts to register,
qualify or comply under this Section 1.5 may be deferred for a period of ninety
(90) days from the date of receipt of written request from the Initiating
Holders.

     Subject to the foregoing clauses (1) through (3), the Company shall file a
registration statement covering the Registrable Securities so requested to be
registered as soon as practicable after receipt of the request or requests of
the Holders.

              (b)   UNDERWRITING.  In the event that a registration pursuant to
Section 1.5 is for a registered public offering involving an underwriting, the
Company shall so advise the Holders as part of the notice given pursuant to
Section 1.5(a)(i).  The right of any Holder to registration pursuant to
Section 1.5 shall be conditioned upon such Holder's participation in the
underwriting arrangements required by this Section 1.5 and the inclusion of such
Holder's Registrable Securities in the underwriting, to the extent requested, to
the extent provided in this Agreement.

     The Company shall (together with all Holders proposing to distribute their
securities through such underwriting) enter into an underwriting agreement in
customary form with the managing underwriter selected for such underwriting by
Metra (which managing underwriter shall be reasonably acceptable to the
Company).

     If any Holder of Registrable Securities disapproves of the terms of the
underwriting, such person may elect to withdraw therefrom by written notice to
the Company, the managing underwriter and the Holders.  The Registrable
Securities and/or other securities so withdrawn shall also be withdrawn from
registration, and such Registrable Securities shall not be transferred in a
public distribution prior to one hundred eighty (180) days after the effective
date of such registration.

     1.6  COMPANY REGISTRATION.

              (a)   NOTICE OF REGISTRATION.  If, beginning one (1) year
following the date of this Agreement, at any time or from time to time, the
Company shall determine to register any of its securities, either for its own
account or the account of a security holder or holders other than (i) a
registration relating solely to employee benefit plans, or (ii) a registration
relating solely to a Commission Rule 145 transaction, the Company will:

                                       -4-

<PAGE>

                 (i)     promptly give to each Holder written notice thereof;
and

                (ii)     include in such registration (and any related
qualification under blue sky laws or other compliance), and in any underwriting
involved in such registration, all the Registrable Securities specified in a
written request or requests made within fifteen (15) days after receipt of such
written notice from the Company by any Holder; PROVIDED, HOWEVER, that between
the first and second anniversary dates of this Agreement, the Company shall only
be required to include in such registration one-half (1/2) of the Registrable
Securities.  From the second anniversary date of this Agreement, the Company
shall include in such registration all of the Registrable Securities requested
by the Holder.

          (b)  UNDERWRITING.  If the registration of which the Company gives
notice is for a registered public offering involving an underwriting, the
Company shall so advise the Holders as a part of the written notice given
pursuant to Section 1.6(a)(i).  In such event, the right of any Holder to
registration pursuant to Section 1.6 shall be conditioned upon such Holder's
participation in such underwriting and the inclusion of Registrable Securities
in the underwriting to the extent provided herein.  All Holders proposing to
distribute their securities through such underwriting shall (together with the
Company) enter into an underwriting agreement in customary form with the
managing underwriter selected for such underwriting by the Company.  If any
Holder or other holder disapproves of the terms of any such underwriting, he,
she or it may elect to withdraw therefrom by written notice to the Company and
the managing underwriter.  Any securities excluded or withdrawn from such
underwriting shall be withdrawn from such registration, and shall not be
transferred in a public distribution prior to one hundred eighty (180) days
after the effective date of the registration statement relating thereto.

          (c)  RIGHT TO TERMINATE REGISTRATION.  The Company shall have the
right to terminate or withdraw any registration initiated by it under this
Section 1.6 prior to the effectiveness of such registration, whether or not any
Holder has elected to include securities in such registration.

     1.7  REGISTRATION ON FORM S-3.

          (a)  If, beginning one (1) year following the date of this Agreement,
any Holder requests that the Company file a registration statement on Form S-3
(or any successor form to Form S-3) for a public offering of shares of the
Registrable Securities, the reasonably anticipated aggregate price to the public
of which, net of underwriting discounts and commissions, would exceed $350,000,
and the Company is a registrant entitled to use Form S-3 to register the
Registrable Securities for such an offering, the Company shall use its best
efforts to cause such Registrable Securities to be registered for the offering
on such form; PROVIDED, HOWEVER, that the Company shall not be required to
effect more than two (2) registrations pursuant to this Section 1.7 in any
twelve (12) month period.  The Company will (i) promptly give written notice of
the proposed registration to all other Holders, and (ii) as soon as practicable,
use its best efforts to effect such registration (including, without limitation,
the execution of an undertaking to file post-effective amendments, appropriate
qualification under applicable blue sky or other state securities laws and
appropriate compliance with applicable

                                       -5-

<PAGE>

regulations issued under the Securities Act and any other governmental
requirements or regulations) as may be so requested and as would permit or
facilitate the sale and distribution of all or such portion of such Registrable
Securities as are specified in such request, together with all or such portion
of the Registrable Securities of any Holder or Holders joining in such request
as are specified in a written request received by the Company within fifteen
(15) days after receipt of such written notice from the Company; PROVIDED,
HOWEVER, that between the first and second anniversary dates of this Agreement,
the Company shall only be required to include in such registration one-half
(1/2) of the Registrable Securities.  From the second anniversary date of this
Agreement the Company shall include in such registration all of the Registrable
Securities requested by the Holder.  The substantive provisions of
Section 1.5(b) shall be applicable to each registration initiated under this
Section 1.7.

          (b)  Notwithstanding the foregoing, the Company shall not be obligated
to take any action pursuant to this Section 1.7:  (i) in any particular
jurisdiction in which the Company would be required to execute a general consent
to service of process in effecting such registration, qualification or
compliance unless the Company is already subject to service in such jurisdiction
and except as may be required by the Securities Act, (ii) during the period
starting with the date sixty (60) days prior to the filing of, and ending on a
date six (6) months following the effective date of, a registration statement
(other than with respect to a registration statement relating to a Rule 145
transaction, an offering solely to employees or any other registration which is
not appropriate for the registration of Registrable Securities), provided that
the Company is actively employing in good faith all reasonable efforts to cause
such registration statement to become effective, or (iii) if the Company shall
furnish to such Holder a certificate signed by the president of the Company
stating that, in the good faith judgment of the Board of Directors, it would be
seriously detrimental to the Company or its shareholders for registration
statements to be filed in the near future, then the Company's obligation to use
its best efforts to file a registration statement may be deferred for a period
of ninety (90) days from the receipt of the request to file such registration by
such Holder or Holders.

     1.8  LIMITATIONS ON SUBSEQUENT REGISTRATION RIGHTS.  From and after the
date of this Agreement, the Company shall not enter into any agreement granting
any holder or prospective holder of any securities of the Company registration
rights with respect to such securities unless (i) such new registration rights,
including standoff obligations, are on a pari passu basis with those rights of
the Holders under this Agreement, or (ii) such new registration rights,
including standoff obligations, are subordinate to the registration rights
granted Holders under this Agreement.

     1.9  EXPENSES OF REGISTRATION.  All Registration Expenses incurred in
connection with any registration pursuant to Sections 1.5, 1.6 and 1.7 shall be
borne by the Company, provided that the Company shall not be required to pay the
Registration Expenses of any registration proceeding begun pursuant to
Section 1.5, the request of which has been subsequently withdrawn by the
Holders.  In such case, the Holders of Registrable Securities to have been
registered shall bear all such Registration Expenses pro rata on the basis of
the number of shares to have been registered.  Notwithstanding the foregoing,
however, if at the time of the withdrawal, the Holders have learned of a
material adverse change in the condition, business or prospects of the Company

                                       -6-

<PAGE>

from that known to the Holders at the time of their request, of which the
Company had knowledge at the time of the request, then the Holders shall not be
required to pay any of said Registration Expenses.  Unless otherwise stated, all
other Selling Expenses relating to securities registered on behalf of the
Holders shall be borne by the Holders of the registered securities included in
such registration pro rata on the basis of the number of shares so registered.

     1.10 REGISTRATION PROCEDURES.  In the case of each registration,
qualification or compliance effected by the Company pursuant to this Section 1,
the Company will keep each Holder advised in writing as to the initiation of
each registration, qualification and compliance and as to the completion
thereof.  At its expense the Company will:

          (a)  Prepare and file with the Commission a registration statement
with respect to such securities and use its best efforts to cause such
registration statement to become and remain effective for at least one hundred
eighty (180) days or until the distribution described in the registration
statement has been completed; and

          (b)  Furnish to the Holders participating in such registration and to
the underwriters of the securities being registered such reasonable number of
copies of the registration statement, preliminary prospectus, final prospectus
and such other documents as such underwriters may reasonably request in order to
facilitate the public offering of such securities.

     1.11 INDEMNIFICATION.

          (a)  The Company will indemnify each Holder, each of its officers and
directors and partners, and each person controlling such Holder within the
meaning of Section 15 of the Securities Act, with respect to which registration,
qualification or compliance has been effected pursuant to this Section 1, and
each underwriter, if any, and each person who controls any underwriter within
the meaning of Section 15 of the Securities Act, against all expenses, claims,
losses, damages or liabilities (or actions in respect thereof), including any of
the foregoing incurred in settlement of any litigation, commenced or threatened,
arising out of or based on any untrue statement (or alleged untrue statement) of
a material fact contained in any registration statement, prospectus, offering
circular or other document, or any amendment or supplement thereto, incident to
any such registration, qualification or compliance, or based on any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statements therein, in light of the circumstances in
which they were made, not misleading, or any violation by the Company of any
rule or regulation promulgated under the Securities Act applicable to the
Company in connection with any such registration, qualification or compliance,
and the Company will reimburse each such Holder, each of its officers and
directors, and each person controlling such Holder, each such underwriter and
each person who controls any such underwriter, for any legal and any other
expenses reasonably incurred in connection with investigating, preparing or
defending any such claim, loss, damage, liability or action, provided that the
Company will not be liable in any such case to the extent that any such claim,
loss, damage, liability or expense arises out of or is based on any untrue
statement or omission or alleged untrue statement or omission, made in reliance
upon and in conformity with written information furnished to the Company by an
instrument duly executed by such Holder, controlling person or underwriter and
stated to be specifically for use therein.

          (b)  Each Holder will, if Registrable Securities held by such Holder
are included in the securities as to which such registration, qualification or
compliance is being effected, indemnify the Company, each of its directors and
officers, each underwriter, if any, of the Company's securities covered by such
a registration statement, each person who controls the

                                       -7-

<PAGE>

Company or such underwriter within the meaning of Section 15 of the Securities
Act, and each other such Holder, each of its officers and directors and each
person controlling such Holder within the meaning of Section 15 of the
Securities Act, against all claims, losses, damages and liabilities (or actions
in respect thereof) arising out of or based on any untrue statement (or alleged
untrue statement) of a material fact contained in any such registration
statement, prospectus, offering circular or other document, or any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, and will reimburse
the Company, such Holders, such directors, officers, persons, underwriters or
control persons for any legal or any other expenses reasonably incurred in
connection with investigating or defending any such claim, loss, damage,
liability or action, in each case to the extent, but only to the extent, that
such untrue statement (or alleged untrue statement) or omission (or alleged
omission) is made in such registration statement, prospectus, offering circular
or other document in reliance upon and in conformity with written information
furnished to the Company by an instrument duly executed by such Holder and
stated to be specifically for use therein.  Notwithstanding the foregoing, the
liability of each Holder under this Subsection (b) shall be limited to an amount
equal to the public offering price of the shares sold by such Holder.

          (c)  Each party entitled to indemnification under this Section 1.11
(the "Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom, provided that counsel for the Indemnifying
Party, who shall conduct the defense of such claim or litigation, shall be
approved by the Indemnified Party (whose approval shall not unreasonably be
withheld), and the Indemnified Party may participate in such defense at such
party's expense, and provided further that the failure of any Indemnified Party
to give notice as provided herein shall not relieve the Indemnifying Party of
its obligations under this Section 1 unless the failure to give such notice is
materially prejudicial to an Indemnifying Party's ability to defend such action.
No Indemnifying Party, in the defense of any such claim or litigation, shall,
except with the consent of each Indemnified Party, consent to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant or plaintiff to such Indemnified Party
of a release from all liability in respect to such claim or litigation.

     1.12 INFORMATION BY HOLDER.  The Holder or Holders of Registrable
Securities included in any registration shall furnish to the Company such
information regarding such Holder or Holders, the Registrable Securities held by
them and the distribution proposed by such Holder or Holders as the Company may
request in writing and as shall be required in connection with any registration,
qualification or compliance referred to in this Section 1.

     1.13 RULE 144 REPORTING.  With a view to making available the benefits of
certain rules and regulations of the Commission which may at any time permit the
sale of the restricted securities to the public without registration, the
Company agrees to use its best efforts to:

                                       -8-

<PAGE>

          (a)  Make and keep public information available, as those terms are
understood and defined in Rule 144 under the Securities Act;

          (b)  File with the Commission in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act;
and

          (c)  So long as a Holder owns any restricted securities, to furnish to
the Holder forthwith upon request a written statement by the Company as to its
compliance with the reporting requirements of said Rule 144; and of the
Securities Act and the Exchange Act, a copy of the most recent annual or
quarterly report of the Company, and such other reports and documents of the
Company and other information in the possession of or reasonably obtainable by
the Company as a Holder may reasonably request in availing itself of any rule or
regulation of the Commission allowing a Holder to sell any such securities
without registration.

     1.14 TRANSFER OF REGISTRATION RIGHTS.  The rights to cause the Company to
register securities granted Holders under Sections 1.5, 1.6 and 1.7 may be
assigned to a transferee or assignee reasonably acceptable to the Company in
connection with any transfer or assignment of Registrable Securities by a Holder
(together with any affiliate); PROVIDED, that (a) such transfer may otherwise be
effected in accordance with applicable securities laws, (b) notice of such
assignment is given to the Company, and (c) such transferee or assignee (i) is a
wholly-owned subsidiary or constituent partner of such Holder, or (ii) acquires
from such Holder at least twenty percent (20%) of the Registrable Securities
held by the Holder.

     1.15 TERMINATION OF RIGHTS.  The rights of any particular Holder to cause
the Company to register securities under Sections 1.5, 1.6 and 1.7 shall
terminate with respect to such Holder upon the earlier to occur of (i) the date
that is five (5) years after the date hereof, or (ii) at such time as such
Holder is able to dispose of all its Registrable Securities in one three-month
period pursuant to the provisions of Rule 144.

     1.16 AMENDMENT  This Agreement may be amended or waived with the written
consent of the Company and the Holders of at least a majority of the outstanding
shares of the Registrable Securities.  Any amendment or waiver effected in
accordance with this paragraph shall be binding upon each Holder of Registrable
Securities and the Company.  In addition, the Company may waive performance of
any obligation owing to it, as to some or all of the Holders of Registrable
Securities, or agree to accept alternatives to such performance, without
obtaining the consent of any Holder of Registrable Securities.  In the event
that an underwriting agreement is entered into between the Company and any
Holder, and such underwriting agreement contains terms differing from this
Agreement, as to any such Holder the terms of such underwriting agreement shall
govern.

     1.17 THIRD PARTIES.  Nothing in this Agreement, express or implied, is
intended to confer upon any party, other than the parties to this Agreement, and
their respective successors and assigns, any rights, remedies, obligations or
liabilities under or by reason of this Agreement, except as expressly provided
in this Agreement.

                                      -9-

<PAGE>

     1.18 GOVERNING LAW.  This Agreement shall be governed by and construed
under the laws of the State of California in the United States of America.

     1.19 COUNTERPARTS.  This Agreement may be executed in counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

     1.20 NOTICES.  Any notice required or permitted by this Agreement shall be
in writing and shall be sent by prepaid registered or certified mail, return
receipt requested, or otherwise delivered by hand or by messenger addressed to
the other party at the address shown below or at such other address for which
such party gives notice under this Agreement.  Such notice shall be deemed to
have been given when delivered if delivered personally, or, if sent by mail, at
the earlier of its receipt or three (3) days after deposit in the mail.

     1.21 SEVERABILITY.  If one or more provisions of this Agreement are held to
be unenforceable under applicable law, portions of such provisions, or such
provisions in their entirety, to the extent necessary, shall be severed from
this Agreement, and the balance of this Agreement shall be enforceable in
accordance with its terms.

     1.22 DELAYS OR OMISSIONS.  No delay or omission to exercise any right,
power or remedy accruing to any party to this Agreement, upon any breach or
default of the other party, shall impair any such right, power or remedy of such
non-breaching party nor shall it be construed to be a waiver of any such breach
or default, or an acquiescence therein, or of or in any similar breach or
default thereafter occurring; nor shall any waiver of any single breach or
default be deemed a waiver of any other breach or default theretofore or
thereafter occurring.  Any waiver, permit, consent or approval of any kind or
character on the part of any party of any breach or default under this
Agreement, or any waiver on the part of any party of any provisions or
conditions of this Agreement, must be made in writing and shall be effective
only to the extent specifically set forth in such writing.  All remedies, either
under this Agreement, or by law or otherwise afforded to any holder, shall be
cumulative and not alternative.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the day and year first above written.


CHOLESTECH CORPORATION                       METRA BIOSYSTEMS, INC.


By:                                          By:
    --------------------------                   ------------------------------

Title:                                       Title:
       -----------------------                      ---------------------------

                                      -10-

<PAGE>
                                                                    EXHIBIT 23.3
 
                       CONSENT OF DEHLINGER & ASSOCIATES
 
    We  consent to the reference to our  firm under the caption "Experts" in the
Registration Statement  on Form  S-1 and  the related  Prospectus of  Cholestech
Corporation  (the "Company") for  the registration of up  to 3,450,000 shares of
Common Stock of the Company, filed with the Securities and Exchange Commission.
 
                                          DEHLINGER & ASSOCIATES
 
Palo Alto, California
May 9, 1996


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